The Shipley Collection of Scientific Papers, Volume 331890 - Zoology |
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Results 1-5 of 41
Page 23
... protoplasm lying close to the cellulose wall , and enclosing the sap cavity of the cell . Professor Huxley , in an article on the Cell Theory , 2 criticised the views of Schleiden and Schwann , and introduced the terms endoplast and ...
... protoplasm lying close to the cellulose wall , and enclosing the sap cavity of the cell . Professor Huxley , in an article on the Cell Theory , 2 criticised the views of Schleiden and Schwann , and introduced the terms endoplast and ...
Page 24
... protoplasm . He identified the protoplasm of the animal and vegetable cell as essentially the same substance as the contractile sarcode which forms the freely moving pseudopodia of the Rhizopoda , and he looked upon it as possessing ...
... protoplasm . He identified the protoplasm of the animal and vegetable cell as essentially the same substance as the contractile sarcode which forms the freely moving pseudopodia of the Rhizopoda , and he looked upon it as possessing ...
Page 25
... protoplasm . Schultze also maintained that the appear- ance of the membrane might be looked upon as a sign of com- mencing loss of activity , for a cell with a membrane can no longer divide as a whole , but the division is restricted to ...
... protoplasm . Schultze also maintained that the appear- ance of the membrane might be looked upon as a sign of com- mencing loss of activity , for a cell with a membrane can no longer divide as a whole , but the division is restricted to ...
Page 26
... protoplasm . He was not , however , disposed to extend the definition to iso- lated fragments of living protoplasm , unless the whole group of phenomena characteristic of an independent organism could be recognised . Stricker held that ...
... protoplasm . He was not , however , disposed to extend the definition to iso- lated fragments of living protoplasm , unless the whole group of phenomena characteristic of an independent organism could be recognised . Stricker held that ...
Page 27
... protoplasm . It is , he says , from the bioplasm that the formed material is produced . An important advance was made in the conception of the structure of the constituent parts of the cell when it was ascer- tained that protoplasm was ...
... protoplasm . It is , he says , from the bioplasm that the formed material is produced . An important advance was made in the conception of the structure of the constituent parts of the cell when it was ascer- tained that protoplasm was ...
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.