The Shipley Collection of Scientific Papers, Volume 331890 - Zoology |
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Results 1-5 of 65
Page 4
... result of their researches into the microscopic structure of rocks and minerals , and the form of their constituent crystals . Manufacturers of textile fabrics may also have something to say on the economic applications of the ...
... result of their researches into the microscopic structure of rocks and minerals , and the form of their constituent crystals . Manufacturers of textile fabrics may also have something to say on the economic applications of the ...
Page 15
... results were published in a series of memoirs printed in the Transactions of the Royal Society of London from 1838 to 1841.1 In these embryological memoirs , Barry announced several important discoveries . In his first memoir ( 1838 ) ...
... results were published in a series of memoirs printed in the Transactions of the Royal Society of London from 1838 to 1841.1 In these embryological memoirs , Barry announced several important discoveries . In his first memoir ( 1838 ) ...
Page 44
... results this carries in its train will be men- tioned below . Finally , the occurrence of long spines is a wide- spread phenomenon , though what their precise use is it would be rash to surmise . Possibly they are of a protective nature ...
... results this carries in its train will be men- tioned below . Finally , the occurrence of long spines is a wide- spread phenomenon , though what their precise use is it would be rash to surmise . Possibly they are of a protective nature ...
Page 44
... results in a " morula " of which the external layer is the ectoderm and the rest endoderm . I think we must imagine that in the development of Geryonia the shortening process has gone one step further , and that as a result of ...
... results in a " morula " of which the external layer is the ectoderm and the rest endoderm . I think we must imagine that in the development of Geryonia the shortening process has gone one step further , and that as a result of ...
Page 44
... unfortunately been unable to do . I think that any such investigation would have valuable results . I agree with Balfour in his view that the concrescence " " theory of the growth of the Vertebrate embryo is untenable ADAM SEDGWICK .
... unfortunately been unable to do . I think that any such investigation would have valuable results . I agree with Balfour in his view that the concrescence " " theory of the growth of the Vertebrate embryo is untenable ADAM SEDGWICK .
Common terms and phrases
acquired characters Actinozoa adult alimentary Amphioxus Anatomy ancestral Annelid ants appear archenteron assume become blastopore body Burchell's zebra carapace-length cavity changes chromatin cœlom colour connection corpuscles degeneration dentary derived deviation differentiation diploblastic disuse division ectoderm eggs embryo essay evolution excretory existence explanation fact females fibres formation frontal breadth germ germ-plasm growth homologous horse hybrid hypothesis important insects instance instincts larva larvæ legs less males mare mean mesoblast Metazoa modified morphological mouth and anus natural selection nephridia nervous system neural canal nucleus number of glands nutrition observations occur ontogeny organs origin ovum Panmixia Peripatus plants plasm pores pouches present primitive streak principle produced Professor Weismann protoplasm recognised regard reproductive cells result Schwann Sedgwick segmentation nucleus segmented animals somites specialised species Spencer stage structure substance supposed telegony theory tion tissues unicellular variability variations Vertebrata Vertebrate workers yolk zebra
Popular passages
Page 65 - The elementary parts of all tissues are formed of cells in an analogous, though very diversified manner, so that it may be asserted, that there is one universal principle of development for the elementary parts of organisms, however different, and that this principle is the formation of cells.
Page 7 - XVIII. OF THE SCHEMATISME OR TEXTURE OF CORK, AND OF THE CELLS AND PORES OF SOME OTHER SUCH FROTHY BODIES...
Page 72 - PROCESSES, AND COLLATERAL INFORMATION IN THE ARTS, MANUFACTURES, PROFESSIONS, AND TRADES, INCLUDING MEDICINE, PHARMACY, AND DOMESTIC ECONOMY ; designed as a General Book of Reference for the Manufacturer, Tradesman, Amateur, and Heads of Families.