The Shipley Collection of Scientific Papers, Volume 331890 - Zoology |
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Page 6
... glands when engaged in active secretion , the changes which take place in cells during multiplication , are all cases in point . As myself engaged in biological studies , it is only natural that my attention should have been more ...
... glands when engaged in active secretion , the changes which take place in cells during multiplication , are all cases in point . As myself engaged in biological studies , it is only natural that my attention should have been more ...
Page 17
... Glands , " London and Edinburgh Monthly Journal , April 1842 ; " On Struc- ture of Human Kidney , " ibid . , May 1842 ; Anatomical and Pathological Ob- servations , Edinburgh , 1845 ; also , his collected papers in Anatomical Memoirs ...
... Glands , " London and Edinburgh Monthly Journal , April 1842 ; " On Struc- ture of Human Kidney , " ibid . , May 1842 ; Anatomical and Pathological Ob- servations , Edinburgh , 1845 ; also , his collected papers in Anatomical Memoirs ...
Page 19
... glands assimilated the secretion from the blood . That the secretion might be separated , either by the passage of ... Gland , London , 1845 . parent cells . Even before the publication of Schwann's im- THE CELL THEORY , PAST AND PRESENT ...
... glands assimilated the secretion from the blood . That the secretion might be separated , either by the passage of ... Gland , London , 1845 . parent cells . Even before the publication of Schwann's im- THE CELL THEORY , PAST AND PRESENT ...
Page 44
... glands of a worm - like animal with well - differentiated mesodermal tissues ( a view which on physiological grounds is hard to accept ) but are rather to be traced back to simple ectodermal pits in the two - layered ancestor developed ...
... glands of a worm - like animal with well - differentiated mesodermal tissues ( a view which on physiological grounds is hard to accept ) but are rather to be traced back to simple ectodermal pits in the two - layered ancestor developed ...
Page 44
... glands of a worm - like ancestor with a well developed middle layer is beset with so many physiological difficulties that I venture to suggest the following hypothesis , which agrees equally well with what we know of the development of ...
... glands of a worm - like ancestor with a well developed middle layer is beset with so many physiological difficulties that I venture to suggest the following hypothesis , which agrees equally well with what we know of the development of ...
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.