The Shipley Collection of Scientific Papers, Volume 331890 - Zoology |
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Results 1-5 of 67
Page 20
... question their accuracy . In 1841 , Robert Remak published1 an account of what he saw in the blood corpuscles of the chick , some of which were biscuit - shaped . At each end was a nucleus , and the two nuclei were connected together by ...
... question their accuracy . In 1841 , Robert Remak published1 an account of what he saw in the blood corpuscles of the chick , some of which were biscuit - shaped . At each end was a nucleus , and the two nuclei were connected together by ...
Page 28
... question of the relation of the nucleus to the life of the cell , more especially in con- nection with the production of young cells , assumed a much more definite form when it was discovered that the chromatin nuclear fibres took a ...
... question of the relation of the nucleus to the life of the cell , more especially in con- nection with the production of young cells , assumed a much more definite form when it was discovered that the chromatin nuclear fibres took a ...
Page 35
... question therefore has been put whether the division of the protoplasm is a consequence or a coincidence of the division of the nucleus . I am inclined to think that the cleavage of the cell protoplasm is consequent on the nuclear ...
... question therefore has been put whether the division of the protoplasm is a consequence or a coincidence of the division of the nucleus . I am inclined to think that the cleavage of the cell protoplasm is consequent on the nuclear ...
Page 36
... question of the hereditary transmission of properties , both as regards the constituent tissues of the organism and the individual as a whole , has been put on a more definite physical basis . The penetration of the ovum by the ...
... question of the hereditary transmission of properties , both as regards the constituent tissues of the organism and the individual as a whole , has been put on a more definite physical basis . The penetration of the ovum by the ...
Page 37
... question , Is this altogether without significance ? It would seem , therefore , as if the whole of the cells of the body and the tissues derived from them are , as regards both nucleus and cell protoplasm , descended from material ...
... question , Is this altogether without significance ? It would seem , therefore , as if the whole of the cells of the body and the tissues derived from them are , as regards both nucleus and cell protoplasm , descended from material ...
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.