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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 11

By: Wistar Institute of Anatomy and Biology

...E UNIVERSITYOF CALIK<HIM V PUBLISHED BY THE WISTAR INSTITUTE OF ANATOMYAND BIOLOGY PHILADELPHIA, PA., U. S. A. Price: $3.00 post paid BIBLIOGRAPHIC S... ...ERSITY OF CALIFORNIA 1920 PUBLISHED BY THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY PHILADELPHIA CONTENTS 1 . Introduction 5 The conditions of the exp... ... porcelain, is 6 inches square by 4 inches deep. The water level in either type can be readily changed by an L-tube draining through a hole near the b... ...binous larvae As is well known, the melanophores of the tadpole are of two types. One type the epidermal melanophore is found in the epithelial coveri... ...mal melanophore is found in the epithelial covering of the body; the other type the deep melan- ophore lies in or around the deeper structures. These ... ... the deep melan- ophore lies in or around the deeper structures. These two types, then, of necessity, will be treated independently. The epidermal mel... ...It is emphasized, however, that the distribution of these cells in neither type of animal is uniform. Yet their number in the normal even in the areas... ... Michigan, and the Division of Embryology, Wistar Institute of Anatomy and Biology, Philadelphia. 142 pages of text and 42 figures from drawings by th...

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Type (biology)

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...ter coronatus - Muséum de Toulouse In biology, a type is one particular specimen (or in some cases a group of spe... ...us - Muséum de Toulouse In biology, a type is one particular specimen (or in some cases a group of specimens) of ... ... with other like organisms, a species description) and on the provision of type material, which is usually available to scientists for examination in ... ... Contents 1 Type specimen 2 Older terminology ... ... 4.1 Definitions 4.2 Use of type specimens 4.2.1 ... ... 4.2.11 Formalisation of the type system ... ... of Linnaeus's contributions to the nomenclature and methods of systematic biology", Systematic Zoology 8 (1): 4-22, p. 4 ...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 9

By: Wistar Institute of Anatomy and Biology

... TO 7 INCLUSIVE APPEARED AS MEMOIRS or THE WISTAR INSTITUTE or ANATOMY AND BIOLOGY EDITED BY GEORGE S. HUNTINGTON COLUMBIA UNIVERSITY WITH THE COLLABO... ...the demands of biological science in our country for a publication of this type have become more urgent and more clearly defined. It is the inten- tio... ...ppeared under the title of "Memoirs of The Wistar Institute of Anatomy and Biology." No. 8 of the series is the first to appear under the new title. I... ...SLAND COLLEGE HOSPITAL 1019 PUBLISHED BY THE WISTAR INSTITUTE OFANATOMYAND BIOLOGY PHILADELPHIA CONTENTS OF PART I 1. Introduction 5 2. Nomenclature ... ...d to the minute structure of the conarium. Kolliker ('87) 212 observed two types of cells in the pineal body; that is, small round cells and multipola... ...ion Kolliker was led to believe that the pinealbody is entirely nervous in type. Clarke ('60) 69 found nerve fibers, nuclei, and brain sand but no ner... ... be considered a ganglionic derivative of the teg- mentum. It contains two types of cells, namely, those with a diameter of 15 micra and those with a ... ...set of anastomosing tubules are given off. It has a well-marked sinusoidal type of circulation. These conditions have been observed by Warren 416 in S... ... Michigan, and the Division of Embryology, Wistar Institute of Anatomy and Biology, Philadelphia. 142 pages of text and 42 figures from drawings by th...

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Type

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...refer to: In philosophy: Type (metaphysics), a concept in the type–token distinction ... ...tion In theology: Type & Antitype in Typology (theology) In ma... ...) In mathematics: Type (model theory) Type theory, basis for the stu... ...model theory) Type theory, basis for the study of type systems Type or arity, the number of operands... ...or arity, the number of operands a function takes Type, any proposition or set in the intuitionistic type theory ... ...ization by use or function of domestic dogs Type (biology), which fixes a scientific name to a taxon ...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 5

By: Wistar Institute of Anatomy and Biology

... Classic Literature Collection World Public Library.org OF ANATOMY AND BIOLOGY, NO. 5 Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND B... ...... ...GAN, AND THE DEPARTMENT OF EMBRYOLOGY, THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY PHILADELPHIA, PA. Reprinted from the JOURNAL OF MORPHOLOGY, Volume ... ...y presented itself, while stationed at The Wistar Institute of Anatomy and Biology, to collect and fix an extended series of embryological stages of t... ...oidal form. It consists in the main of three layers of cells of polyhedral type; toward the border of the disc, of two layers of somewhat flattened ce... ...ore comprehensive term than 'Blatterumkehrung' under which may be included types with inversion of the germ field without actual inversion of the germ... ...o- derm, the two forming a continuous layer, with line of union of the two types of ectoderm evident. The uncleaved extra- embryonic ectoderm is conti... ...nic ec- toderm; the cells of this portion being of a rather thick pavement type, constituting the primary embryonic entoderm, and fur- ther a portion ... ...rtion which covers the sides of the egg-cylinder, with cells of a columnar type, showing special cytomorphosis. The egg-vesicles and egg-cylinders of ...

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Biology

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...bottom: Goliath beetle and tree fern) Biology is a energy and by regulating their internal environment to maintai... ...intain a stable and vital condition. Subdisciplines of biology are defined by the scale at which organisms are studied, the kinds ... ... 1 History 2 Foundations of modern biology 2.1 Cell theory ... ... 4 Basic unresolved problems in biology 5 Branches ... ... of the biological sciences. The similarities and differences between cell types are particularly relevant to molecular biology. [... ...cal extraclasses = options.extraclasses local selfref = options.selfref if type(extraclasses) == 'string' then classes[#classes + 1] = extraclasses en... ...cal extraclasses = options.extraclasses local selfref = options.selfref if type(extraclasses) == 'string' then classes[#classes + 1] = extraclasses en... ... of the biological sciences. The similarities and differences between cell types are particularly relevant to molecular biology. [... ...cal extraclasses = options.extraclasses local selfref = options.selfref if type(extraclasses) == 'string' then classes[#classes + 1] = extraclasses en...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 3

By: Wistar Institute of Anatomy and Biology

... Classic Literature Collection World Public Library.org OF ANATOMY AND BIOLOGY, NO. 3 Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND B... ...... ... are specific to the degree that they probabably do not give rise to other types of connective tissue. In thus comparing the angioblastic with the mes... ...ndeavors to distinguish between a cytomorphosis terminating in a definable type of cell (development, genesis, anlage, das Werden) and a proliferation... ...nated, while their endothelial lining appears to revert to the indifferent type of the embryonic meso- dermal cell. Thus in embryos between 13.5 and 1... ...ished at all, did not last long. . . . . I succeeded in producing the same type of faulty embryos in the pure breeds of a bony fish (Fundulus heterodi... ... predicate specificity when products deviate in form and function from the type of the parent tissue. Of even greater import, because evincing an iden...

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Type site

Encyclopedia Article

...of Hallstatt swords. In archaeology a type site (also known as a type-site or typesite) is a site that is conside... ...sidered the model of a particular archaeological culture. For example, the type site of the Pre-Pottery Neolithic A culture is Jericho, in the West Ba... ...ite of the Pre-Pottery Neolithic A culture is Jericho, in the West Bank. A type site is also often the eponym (the site after which the culture is nam... ...n the eponym (the site after which the culture is named). For example, the type site of the pre-Celtic/Celtic Bronze Age Hallstatt culture is the lake... ...ed to be typical of a particular rock formation etc. A type site contains artifacts, in an assemblage, that are typical of that cu... ... The use of this term is therefore similar to that of the specimen type in biology (see biological types) or locus typicus (type locality) in geology....

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 4

By: Wistar Institute of Anatomy and Biology

... Classic Literature Collection World Public Library.org OF ANATOMY AND BIOLOGY, NO. 4 Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND B... ...... ...ot grow into the embryo from the yolk-sac, is borne out by experiment. Two types of experiment have thus far beenmade to determine this question: (1) ... ...s- sels in the domestic cat. Memoirs of TheWistar Institute of Anatomy and Biology, No. 1. 1911 b The development of the lymphatic system in reptiles.... ...al origin of endo- thelium. Memoirs of The Wistar Institute of Anatomy and Biology, No. 3. SILVESTER, C. F. 1904 The blood-vascular system of the tile...

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Whorl (biology)

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...int in an expanding circular pattern. The Hassall's corpuscle, formed from type VI epithelial reticular cells in the thymus, is an... ... All articles lacking sources All stub articles Biology stubs Biology terminology...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 1

By: Wistar Institute of Anatomy and Biology

... Classic Literature Collection World Public Library.org OF ANATOMY AND BIOLOGY, NO. 1 Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND B... ...... ...e with them, except at definite points, at which the rudimentary mammalian type of lymphatico-venous heart is developed. 2. A definite structure, the ... ... TO BLOOD-VASCULAR SYSTEM 15 Cat, which animal, by reason of its clear-cut type of venous development, 23 and the great range of its adult venous vari... ...oracic ducts. This ontogenetic temporary recall of antecedent phylogenetic types of vascular development appears to be chiefly centered, in the mammal... ...nated, while their endothelial lining appears to revert to the indifferent type of the embryonic mesodermal cell. Thus in embryos between 13.5 and 16 ... ... chain of preaortic lymph channels and nodes, but are capable, in aberrant types among the placentalia, of yielding, by further and continuous develop...

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Developmental biology

Encyclopedia Article

... Developmental biology journals ... ... Pages in category "Developmental biology" The following 295 pages are in this category, out of 295 total. ... ... Amniotic fluid Amniotic sac Anamorphosis (biology) Anti-Müllerian hormone Apolysis ... ... Cell fate determination Cell potency Cell type Cellular differentiation Center for Urologie R... ... D Decidual cells Developmental biology Developmental homeostasis Developmental noi... ...tion Environmental enrichment (neural) Epigenesis (biology) Epimorphosis Epithelial–mesenchymal transi... ... Cell fate determination Cell potency Cell type Cellular differentiation Center for Urologie R...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 6

By: Wistar Institute of Anatomy and Biology

... Classic Literature Collection World Public Library.org OF ANATOMY AND BIOLOGY, NO. 6: THE RAT Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANAT... ... NO. 6: THE RAT Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY, NO. 6: THE RAT Author: HENRY H. DONALDSON Language: English Subje... ...rldLibrary.net S 7 <S>. v MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY No. 6 THE RAT REFERENCE TABLES AND DATA FOR THE ALBINO RAT (MUS NOR... ...of thecommon rats 10-15 PART I ALBINO RAT MUS NORVEGICUS ALBINUS Chapter 1 Biology 19-28 Chapter 2 Heredity 29 Chapter 3 Anatomy 30-57 Chapter 4 Physi... ...ts, reserv- ing Mus for the smaller forms, the mice Mus musculus being the type. In 1910 Miller established the use of Epimys for the rats and the cha... ...rdance with their remote ancestry. Mudge ('10) recognizes thirteen gametic types. The gametic dissimilarity of various Albinos hi respect to hair colo... ...d size of the various forms of the wandering cells of the blood in the rat TYPE OF CELL 42 ANATOMY TABLE 22 The number of mitoses in 13 consecutive s... ...he above procedure is that to be followed with other formulas- of the same type. BODY WEIGHT ON BRAIN WEIGHT (DONALDSON, '08) Br. wt.-0.554 Body weigh... ...les villosite's intestinales. Bibl. anat., vol. 14, p. 236. 1909 Etude des types appendiciels de la muqueuse intestinale, en rap- port avec les regime...

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Cell biology

Encyclopedia Article

...s of their molecular components. Cell biology (formerly cytology, from the humans, plants, and sponges. ... ...gical sciences. Appreciating the similarities and differences between cell types is particularly important to the fields of cell and molecular biology... ...n cell types is particularly important to the fields of cell and molecular biology as well as to biomedical fields such as cancer research and develop... ... as well as to biomedical fields such as cancer research and developmental biology. These fundamental similarities and differences provide a unifying ... ...ng theme, sometimes allowing the principles learned from studying one cell type to be extrapolated and generalized to other cell types. Therefore, res... ...rapolated and generalized to other cell types. Therefore, research in cell biology is closely related to genetics, biochemistry, molecular biology, im... ...o genetics, biochemistry, molecular biology, immunology, and developmental biology. Contents ... ...re labelled red with phalloidin. Each type of protein is usually sent to a particular part of the cell. An import...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 7

By: Wistar Institute of Anatomy and Biology

... Classic Literature Collection World Public Library.org OF ANATOMY AND BIOLOGY, NO. 7 Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND B... ...... ...n this way the blood cells become associated and mixed with numerous other types of cells, and it is difficult, if not impossible, to establish their ... ... time would seem to indicate that all blood cells arise from a mesenchymal type of cell. A number of very competent workers have described the change ... ...ur in an interstitial position, while on the other hand, this same general type of mother cell gives rise to other cells which later differ- entiate i... ...hat these so-called stem mother cells may in reality not all belong to one type, but are different and may already be destined to form either red cell... ...monophyletic school really goes still further and not only claims that all types of blood cells arise from a common mother mesenchymal cell, but also ...

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Integrative Biology

Encyclopedia Article

... Discipline Biology Language ... ... Integrative Biology is a peer-reviewed scientific journal, publishing original (primary... ...imary) research and review articles. Papers focus on the interface between biology and the fields of physics, chemistry, engineering, imaging and info... ...s of physics, chemistry, engineering, imaging and informatics. Integrative Biology is published monthly by the Royal Society of Chemistry (RSC), a not... ...f Chemistry (RSC), a not-for-profit publisher. Article types Integrative Biology publishes Research Papers (ori... ...ublisher. Article types Integrative Biology publishes Research Papers (original scientific work), Communication... ...d Review Articles, including Perspectives and Mini reviews (feature review-type articles of interest to a broad readership) Extern... ...f Chemistry (RSC), a not-for-profit publisher. Article types Integrative Biology publishes Research Papers (ori... ...d Review Articles, including Perspectives and Mini reviews (feature review-type articles of interest to a broad readership) Extern...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 10

By: Wistar Institute of Anatomy and Biology

...Library.net Number 10 MAY, 1923 \I'MHERS I TO 7 I THE \VISTAR IN- MY AND BIOLOGY EDITED BY GEOKC.K S. HUNTINGTON COLUMBIA UNIVERSITY WITH THE COLLAB... ...TUTE OF ANATOMY AND BIOL' PUBLISHED BY THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY PHILADELPHIA, PA.. U. 5. A. THE AMERICAN ANATOMICAL MEMOIRS This s... ...the demands of biological science in our country for a publication of this type have become more urgent and more clearly defined. It is the intention ... ...eared under the title of "Memoirs of The Wist a r Institute of Anatomy and Biology." They are as follows: No. 1. The Anatomy and Development of the Sy... ...of Anatomy, University of Michigan and The Wistar Institute of Anatomy and Biology. Philadelphia. 142 pages of text and 42 figures from drawings by th... ...r of the Albino Rat, by Tokujiro Wada, The Wistar Institute of Anatomy and Biology. 174 pages, 124 tables, 42 charts, 12 figures and 2 plates. Price, ... ...middle turn of the cochlea, figure 3, turn n, which I have selected as the type, as did Retzius. The fact, demonstrated by many authors, Bottcher ('69... ...e- action, the cochlea of the latter, non-hearing rat, may be taken as the type for this age. The differences between the cochlea of the hearing and n...

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Molecular biology

Encyclopedia Article

...Molecular biology is the branch of biology that deals with the molecular basis of biological activity. This fi... ...ular basis of biological activity. This field overlaps with other areas of biology and chemistry, particularly genetics and biochemistry. Molecular bi... ...arious systems of a cell, including the interactions between the different types of DNA, RNA and protein biosynthesis as well as learning how these in... ...ated. Writing in Nature in 1961, William Astbury described molecular biology as: "...not so much a technique as an approach, an ap... ...eading idea of searching below the large-scale manifestations of classical biology for the corresponding molecular plan. It is concerned particularly ... ...tive molecules are examples of biochemistry. wild type" or normal phenotype. Genetic interactions (epistasis) can often confo... ... translational apparatus; and proteins, the major structural and enzymatic type of molecule in cells. Expression cloning ... ... The northern blot is used to study the expression patterns of a specific type of RNA molecule as relative comparison among a set of different sample... ... Types ...

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University of Pennsylvania Handbook of Information Concerning the School of Biology

By: University of Pennsylvania Department of Biology

...F PENNSYLVANIA. =:::. " HANDBOOK OF INFORMATION CONCERNING THE SCHOOL OF BIOLOGY. PHILADELPHIA: 188 9 "". . . ... . .. . .. . .. . ... . ..... ...he Towne Scientific School). THE COURSE IN NATURAL HISTORY, (The School of Biology). THE COURSE IN PHILOSOPHY FOR UNDERGRADUATES. THE COURSE IN FI... ...irector of Physical Education. MILTON J. GREENMAN, Assistant Instructor in Biology. R. HAMILL D. SWING, D.D.S., 3709 Spruce St. 129 S. 36th St. ... ...Clerk to the Faculty of Dentistry. BARCELONA BASS, Clerk to the Faculty of Biology. 3733 Spruce St. 912 Walnut St. " " ;: • o • , • • ti... ... dissected preparations illustrating the Anatomy of any animal or vegetable type studied. II. THE HENRY REED PRIZE, founded by the Alumni of the Un... ...e lectures on anatomy, histology, embryology, special organs and zoological types. The Museum also contains specimens illustrating the groups of inv... ...in the very front rank of collections designed to illustrate not merely the types of the organisms of the natural system, but also their genetic re... ... the explanations or assign just reasons for a given arrangement of natural types. There is a growing conviction that many features which are develo... ...y complete suites of preparations representing analogous organs of various types, which are arranged in such a way as to show the modifi­ cations wh...

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Systems biology

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...An illustration of the systems approach to biology Systems biology (also known as... ...on is only possible using techniques which fall under the remit of systems biology. These typically involve metabolic networks or cell signaling netwo... ...8 Overview Systems biology can be considered from a number of different aspects: ... ...l models" (Sauer et al.).[5] "Systems biology...is about putting together rather than taking apart, integration r... ...teractions in a system, the experimental techniques that most suit systems biology are those that are system-wide and attempt to be as complete as pos... ...e perturbation methods, including gene-based (RNAi, mis-expression of wild type and mutant genes) and chemical approaches using small molecule librari... ... Types of systems ...

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Memoirs of the Wistar Institute of Anatomy and Biology : Volume 6

By: Wistar Institute of Anatomy and Biology

... Classic Literature Collection World Public Library.org OF ANATOMY AND BIOLOGY, NO. 6 Title: MEMOIRS OF THE WISTAR INSTITUTE OF ANATOMY AND B... ...s of the common rats 7 ALBINO RAT MUS NORVEGICUS ALBINUS PART I Chapter 1. Biology 15 Chapter 2. Genetics 34 Chapter 3. Anatomy 37 Chapter 4. Physiolo... ...ecords of 1915. Undoubtedly there are other in- stances of changes of this type not yet noted. Such changes mean that there is a drift in the characte... ...nstance to disclaim the suggestion that they furnish standards of the same type as are to be had in the physical sciences. In the very nature of the c... ...icated albino rat, which is a mutant from the wild Norway, but the general biology of all the color varieties of this species is similar. The wild Nor... ...an for hundreds or even thousands of years, and in most instances the wild types from which they came are either doubtful or hard to obtain. XIV . PR... ...e major deficiencies are pre- sented by the rat. Its small size makes some types of experi- mental work either difficult or impossible. Its resistance... ...rats, reserving Mus for the smaller forms, the mice Mus musculus being the type. In 1910 Miller established the use of Epimys for the rats. By the law... ...s, '06. Koepert, '04. PART I ALBINO RAT MUS NORVEGICUS ALBINUS CHAPTER 1 BIOLOGY 1. Life history. 2. Span of life. 3. Puberty. 4. Period of gestatio...

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Membrane biology

Encyclopedia Article

... Pages in category "Membrane biology" The following 196 pages are in this category, out of 196 total. ... ... Hopanoids Hydrophobic mismatch Hyperpolarization (biology) I Inner membrane ... ... Jeewanu L L-type calcium channel Lamellar phase Lamellar struct... ...ium transporter Mechanosensitive channels Membrane biology Membrane channel Membrane contact site ... ... N-Acetylglucosamine N-Acetylmuramic acid N-type calcium channel Nanodisc Neurophysins ... ...ter mitochondrial membrane P P-type ATPase P-type calcium channel P300-CBP coactiv... ...ycan Pterygium Q Q-type calcium channel R R-type c... ...nilamellar liposome V Vesicle (biology and chemistry) Voltage-dependent calcium channel ... ... Jeewanu L L-type calcium channel Lamellar phase Lamellar struct...

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Biology

By: Calkins, Gary N. (Gary Nathan), B. 1869

... BIOLOGY BIO LOG* R G BIOLOGY BY GARY N. CALKINS, PH.D. PROFESSOR OF PROTOZOOLOGY IN COLUMBIA U... ...PANY 3 . . THE. MAPLE. PKESS-YORK- PA PREFACE The subject matter of general biology, as presented in current text books, is variously interpreted. In... ...nd plants. In others it means the discussion of hypotheses and principles of biology. In others it becomes an encyclopoedia of the facts of physiology... ...gely upon labora- tory work and the principles are illustrated with specific types. The second and third methods are largely didactic and are illustra... ...random from the entire animal or plant kingdom. We believe thoroughly in the type and laboratory method of instruction, and in choosing the types with... ...is based upon the excellent course outlined in Sedgwick and Wilson's General Biology which occupies so prominent a place in the teaching of American b... ...F ADAPTATIONS. 198 A. Animal Descent . 199 B. Evolution 200 C. Conformity to type 202 D. Somatic and Germ Plasm 203 E. The Mendelian Principles of Her... ...life, or indeed of any of its manifestations, would be of a very superficial type were not the physical sciences involved. Biological and physiologica... ...ant part in the vital processes although since they all do not appear in all types of protoplasm each cannot be regarded as a sine qua non of living m...

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Civic Biology

Encyclopedia Article

...A Civic Biology: Presented in Problems (usually referred to as just Civic Biology) was a biology textbook written by George William Hunter, published... ...customs, and, to an extent, in structure. These are the Ethiopian or negro type, originating in Africa; the Malay or brown race, from the islands of t... ...ing the natives of China, Japan, and the Eskimos; and finally, the highest type of all, the caucasians, represented by the civilized white inhabitants... ...ow meeting with some success in this country. New Civic Biology A revised edition[1] of Hunter's book appeared t... ...50), and had a short biography of Charles Darwin among the "Great Names in Biology" (pages 411-412). This new edition contained an... ... changes about "caucasians": They were no longer described as "the highest type of all", and "the Hindus and Arabs of Asia" were included among the en... ...References ^ George William Hunter, New Civic Biology: Presented in Problems, New York: American Book Co., 1926 ... ..., 1926 George William Hunter, A Civic Biology: presented in problems (New York: American Book Co., 1914). ...

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Biology

By: Henderson, W. D. (William Dawson)

... by W. D. HENDERSON THE PEOPLE'S BOOKS BIOLOGY BIOLOGY BY W. D. HENDERSON M.A. B.Sc., PH.D., F.R.S.E. ZOOLOGICA... ...URGH NEW YORK: DODGE PUBLISHING CO. PREFACE IN writing this Introduction to Biology, I have used, to a large extent, the notes of lectures delivered ... ...terest and be of some slight service to those who are beginning the study of Biology. For all errors of fact and exposition I alone am re- sponsible, ... ...questions arise, and out of the attempts to answer such questions has arisen Biology or the Science of Life. Biology may be defined, in the words of P... ...ell must divide if the growth of the animal is to go on. There are two chief types of cell-division, known as the direct and indirect, or as the amito... ... As specialisation increases, means must be taken to insure that the various types of cells receive a suitable supply of nourishment, and so the organ... ... in a special modification of some or all of the muscle-cells as a primitive type of nervous system. Further, as the muscular system increases, a skel... ...ot only for a greater supply of this material, but also for a more efficient type of material. This means that the fluid, which in the lower forms dif... ...ty in- creases. This difference continues to increase until we find a second type of corpuscles evolved, the red ; and the proportion of red to white ...

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Homogamy (biology)

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Biology

By: Gibson, Robert John Harvey, 1860-1929

... BIOLOGY by R. J. HARVEY GIBSON BIOLOGY AII rights reserved Denies Scientific *Printers Edited byJ.^yno... ...s reserved Denies Scientific *Printers Edited byJ.^ynolds Green&fD., F.R.S. BIOLOGY BY R. J. HARVEY GIBSON, M.A. Professor ofBotany in the University... ...is made to out- line some of the more important principles of the science of Biology, and to illustrate in simple terms the inter-relationship of stru... ... the inter-relationship of structure and function in living organisms. Since Biology is foundedon Physics and Chemistry, an elementary knowledge of th... ...examples, 109. CHAPTER XII. THE STRUGGLE FOR EXISTENCE AND NATURAL SELECTION Types of organisms, 112; powers of increase of organisms, 113; destructio... ...g superficial resem- blance to genuine seaweeds. In studying the very lowest types of life we en- counter even greater difficulties, and the trained z... ...lant or animal, is, as obser- vation tells us, one of many of the same kind, type or species. In some cases at the completion of, but in most cases, a... ...ble of giving rise, under suitable conditions, to a new organism of the same type. In some cases, the co- operation of two individuals is necessary fo... ...time exhibiting many, and often consider- able, variations from the parental type. The off- spring inherit thefundamental characters of the parent or ...

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Habit (biology)

Encyclopedia Article

...s, nutrition mode (free-living, parasitic, holozoic, saprotrophic, trophic type), type of habitat (terrestrial, arboreal, aquatic, marine, freshwater,... ...gic, nektonic, planktonic, etc.), period of activity (diurnal, nocturnal), types of ecological interaction, etc. The habits of pla... ...it. Plants may be woody or herbaceous. The main types of woody plants are trees, shrubs and lianas. Climbing plants (vines)... ...ing to their habit and their life-form. Other terms in biology refer similarly to various taxa; for example: ... ... The structure of a given species of algae is referred to as its type or level of organization. Bacteria are descri... ...re is described by its body plan, which encompasses the body symmetry, the type of germ layers and of body cavities. Since ... ...The Columbia Encyclopedia, Sixth Edition. 2001-05 Biology-Online.org Categories ... ...ing to their habit and their life-form. Other terms in biology refer similarly to various taxa; for example: ... ...The Columbia Encyclopedia, Sixth Edition. 2001-05 Biology-Online.org Categories ...

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Biology

By: Calkins, Gary N. (Gary Nathan), B. 1869

... BIOLOGY by GARY N. CALKINS BIOLOGY BY GARY N. CALKINS, PH.D. PROFESSOR OF PROTOZOOLOGY IN COLUMBIA U... ...ND COMPANY 5. THE MAPLE PRESS YORK PA PREFACE The subject matter of general biology, as presented in current text books, is variously interpreted. In... ...nd plants. In others it means the discussion of hypotheses and principles of biology. In others it becomes an encyclopoedia of the facts of physiology... ...gely upon labora- tory work and the principles are illustrated with specific types. The second and third methods are largely didactic and are illustra... ...random from the entire animal or plant kingdom. We believe thoroughly in the type and laboratory method of instruction, and in choosing the types with... ...is based upon the excellent course outlined in Sedgwick and Wilson's General Biology which occupies so prominent a place in the teaching of American b... ...N OF ADAPTATIONS 203 A. Animal Descent 204 B. Evolution 205 C. Conformity to type 207 D. Somatic and Germ Plasm 208 E. The Mendelian Principles of Her... ...life, or indeed of any of its manifestations, would be of a very superficial type were not the physical sciences involved. Biological and physiologica... ...nt part in the vital processes although, since they all do not appear in all types of protoplasm, each cannot be regarded as a sine qua non of living ...

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Devolution (biology)

Encyclopedia Article

...n that species can change into more "primitive" forms over time. In modern biology the term is redundant: evolutionary science deals with selection or... ..." is based largely on the fallacies that: in biology there is a preferred hierarchy of structure and function, and that ... ... has little to do with the current technical use of the term degeneracy in biology). The term "devolution" and its associat... ... The term "devolution" and its associated concepts never were prominent in biology and now are at most of historical interest, except where they have ... ... unsourced statements from October 2011 Evolutionary biology Creation science Intell... ... the past, Morel claimed there had been "Morbid deviation from an original type".[9] The theory of devolution, was later advocated by some biologists....

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Biology

By: Calkins, Gary N. (Gary Nathan), B. 1869

... BIOLOGY by GARY N. CALKINS BIOLOGY BY GARY N. CALKINS, PH.D. PROFESSOR OF PROTOZOOLOGY IN COLUMBIA U... ...MAPLE PRESS YORK PA PREFACE'"'-'-.. I-/'.,-". The subject matter of general biology, as presented in current text books, is variously interpreted. In... ...nd plants. In others it means the discussion of hypotheses and principles of biology. In others it becomes an encyclopoedia of the facts of physiology... ...gely upon labora- tory work and the principles are illustrated with specific types. The second and third methods are largely didactic and are illustra... ...random from the entire animal or plant kingdom. We believe thoroughly in the type and laboratory method of instruction, and in choosing the types with... ...is based upon the excellent course outlined in Sedgwick and Wilson's General Biology which occupies so prominent a place in the teaching of American b... ...N OF ADAPTATIONS 203 A. Animal Descent 204 B. Evolution 205 C. Conformity to type 207 D. Somatic and Germ Plasm 208 E. The Mendelian Principles of Her... ...life, or indeed of any of its manifestations, would be of a very superficial type were not the physical sciences involved. Biological and physiologica... ...nt part in the vital processes although, since they all do not appear in all types of protoplasm, each cannot be regarded as a sine qua non of living ...

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Cline (biology)

Encyclopedia Article

... 2 Ring species 3 Types of clines 4 See also ... ...enteus Ring species[6] are a distinct type of cline where the geographical distribution in question is circular i... ...kely does not constitute a typical ring species.[7][8] Types of clines Thermocline: A cline based on ... ... Isolation by distance Polymorphism (biology) Race (classification of human beings) ... ... Articles with unsourced statements from July 2009 Biology terminology Evolutionary biology ... ... Biological classification In biology and ecology, an ecocline or simply cline (from Greek: κλίνω "to pos... ... 2 Ring species 3 Types of clines 4 See also ... ...enteus Ring species[6] are a distinct type of cline where the geographical distribution in question is circular i... ... Isolation by distance Polymorphism (biology) Race (classification of human beings) ...

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Biology

By: Calkins, Gary N. (Gary Nathan), B. 1869

... BIOLOGY by GARY N. CALKINS BIOLOGY BY GARY N. CALKINS, PH.D. PROFESSOR OF PROTOZOOLOGY IN COLUMBIA U... ...COMPANY 3 THE. MAPLE. PRESS. YORK. PA PREFACE The subject matter of general biology, as presented in current text books, is variously interpreted. In... ...nd plants. In others it means the discussion of hypotheses and principles of biology. In others it becomes an encyclopoedia of the facts of physiology... ...gely upon labora- tory work and the principles are illustrated with specific types. The second and third methods are largely didactic and are illustra... ...random from the entire animal or plant kingdom. We believe thoroughly in the type and laboratory method of instruction, and in choosing the types with... ...is based upon the excellent course outlined in Sedgwick and Wilson's General Biology which occupies so prominent a place in the teaching of American b... ...N OF ADAPTATIONS 198 A. Animal Descent 199 B. Evolution 200 C. Conformity to type 202 D. Somatic and Germ Plasm 203 E. The Mendelian Principles of Her... ...life, or indeed of any of its manifestations, would be of a very superficial type were not the physical sciences involved. Biological and physiologica... ...ant part in the vital processes although since they all do not appear in all types of protoplasm each cannot be regarded as a sine qua non of living m...

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Taxonomy (biology)

Encyclopedia Article

...d classification to taxonomy also varies because the usage of the terms in biology originated independently.[5] As points of reference, recent definit... ...ssification;[3] The science of classification, in biology the arrangement of organisms into a classification.[6] ... ...mic descriptions Type specimen for Nepenthes smilesii, a tropical pitcher plant. ... ... The description must be based on at least one name-bearing type specimen. It should include statements about ... ... Glossary of scientific naming Identification (biology) Incertae sedis, or "of uncertain placemen... ...atics Taxonomy (general) Type (biology) Notes ... ... Taxonomy (general) Type (biology) Notes ... ... ^ a b Lawrence, E. (2005). Henderson's Dictionary Of Biology. Pearson/Prentice Hall.   ^ &nb...

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Biology

By: Letourneau, Charles Jean Marie, 1831-1902; Maccall, William, 1812-1888

... BIOLOGY by CHARLES LETOURNEAU BIOLOGY. BIOLOGY BY DR. CHARLES LETOURNEAU. TRANSLATED BY WILLIAM MACCAL... ...ND HALL, 193, PICCADILLY. PHILADELPHIA : J. B. LIPPINCOTT AXD' CO. 1878. Lf BIOLOGY LIBRARY G LONDON I R. CLAY, SONS, AND TAYLOR, PRINTERS, BREAD STR... ...ET HILL, QUEEN VICTORIA STREET. UNIVKKS1TY OF CALIFORNIA. PREFACE. THE word Biology, which seems to have been employed for the first time by Treviran... ...ance. It is in this encyclopaedical sense that Auguste Comte took the word " Biology," though as far as we our- selves are concerned we intend to give... ...y the expression of atomic combinations, and can be included in four general types: 1. Simple change of molecular structure, or isomeria. 2. Unfolding... ...e the relation of cellulose to the starches, the sugars and the gums. To the type of sugars, the sugar of grape, or glycose, has long been given the f... ...tion is as true as it is probable, become the source of a superior organised type, can ascend in the hierarchy of life. In fact, many of the inferior ... ... of which we have given above a succinct description, is a sort of schematic type, scarcely existing in anything except rudimentary beings and tissues... ...ing on different forms when assuming diversified functions. Finally, another type of histological element appears : it is the fibre, a microscopical e...

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Regeneration (biology)

Encyclopedia Article

... ^ a b Carlson, B. M. (2007). Principles of Regenerative Biology. Elsevier Inc. p. 400.   ^... ...here is a loss in the structure or function of the injured tissue. In this type of repair, it is common that granulation tissue (stromal connective ti... ... synthesis during imaginal disc regeneration in Drosophila". Developmental Biology 127 (1): 197–208.   ^ a b Broke... ...ntals of planarian regenerations". Annual Review of Cell and Developmental Biology 20: 725–757.   ^ Campbell, N. A... ...ology 20: 725–757.   ^ Campbell, N. A. Biology (4th ed.). California: The Benjamin Cummings Publishing Company, In... ...the origin of limb stem cells". The International journal of developmental biology 46 (7): 887–96.   ^ Mullen LM, ... ...he secret to limb regeneration". the verge.com. Macrophages are a type of repairing cell that devour dead cells and pathogens, and trigger ot... ...e structure and function of the injured tissue are completely normal. This type of regeneration is common in physiological situations. Examples of phy...

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Biology

By: Harvey Gibson, R. J. (Robert John), 1860-1929

...reserved Dent's Scientific 'Primers Edited byJ.^ynolds Green,Sc.T>., F.R.S. BIOLOGY BY R. J. HARVEY GIBSON, M.A. Professor ofBotany in the University... ...is made to out- line some of the more important principles of the science of Biology, and to illustrate in simple terms the inter-relationship of stru... ... the inter-relationship of structure and function in living organisms. Since Biology is foundedon Physics and Chemistry, an elementary knowledge of th... ...vice to those whose studies have lain in other departments of knowledge than Biology. If errors of fact or exposition are not numerous (it is perhaps ... ...examples, 109. CHAPTER XII. THE STRUGGLE FOR EXISTENCE AND NATURAL SELECTION Types of organisms, 112; powers of increase of organisms, 113; destructio... ...g superficial resem- blance to genuine seaweeds. In studying the very lowest types of life we en- counter even greater difficulties, and the trained z... ...lant or animal, is, as obser- vation tells us, one of many of the same kind, type or species. In some cases at the completion of, but in most cases, a... ...ble of giving rise, under suitable conditions, to a new organism of the same type. In some cases, the co- operation of two individuals is necessary fo... ...time exhibiting many, and often consider- able, variations from the parental type. The off- spring inherit the fundamental characters of the parent or...

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Practical Biology

By: Smallwood, W. M. (William Martin), 1873-1949; Reveloy, Ida Louise, 1870; Bailey, Guy A. (Guy Andrew), 1874-1946

...ic Literature Collection World Public Library.org Title: PRACTICAL BIOLOGY Author: W. M. SMALLWOOD Language: English Subject: Fiction, Litera... ...... ...hing Co. — Berwick & Smith Co. Norwood, Mass., U.S.A. ( PREFACE Practical Biology offers a simple, workable, attractive, flexible, and teachable cour... ...y offers a simple, workable, attractive, flexible, and teachable course in Biology. Simplicity is a feature of the book. The language is simple, not t... ...ere are summaries and questions at the end of each chapter, (b) Well-known types like the grasshopper and the bean plant are studied first, and the tr... ...der . 289. Creeping Stem of Trailing Arbutus 290. Horse-Chestnut .... 291. Types of Twigs ..... 292. Cherry Twigs . 293. Sections of Woody Stem 294. W... ...ores 386. Lichens . 387. Section of Lichen 388. Spores of Corn Smut . 389. Types of Mosses . 390. Diagram : Life History of Moss 391. Antheridial Plan... ...t in some of the snails. 90. Clams. — The fresh water clam is a convenient type of mollusk to study. It is found in canals and in many streams and lak... ...avenport, Domestic Animals and Plants. Linville and Kelly, Zoology. Plumb, Types and Breeds of Farm Animals. Stone and Crane, American Animals. PART ...

Biology

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