The Shipley Collection of Scientific Papers, Volume 331890 - Zoology |
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Page 3
... reason why those who have been mainly instrumental in founding the Society have considered that such an association might fill a vacant place and discharge a useful function in this division of the kingdom . The primary object of the ...
... reason why those who have been mainly instrumental in founding the Society have considered that such an association might fill a vacant place and discharge a useful function in this division of the kingdom . The primary object of the ...
Page 44
... reasons previously advanced in my Newcastle Address on Heredity , I am unable to accept the proposition that there can be no transmission to the offspring , through the reaction of the soma on the germ plasm , of characters which may be ...
... reasons previously advanced in my Newcastle Address on Heredity , I am unable to accept the proposition that there can be no transmission to the offspring , through the reaction of the soma on the germ plasm , of characters which may be ...
Page 44
... reason for believing that the immediate ancestors of insects were terrestrial animals , and the aquatic larvæ mentioned show their secondary character by the fact that their respiratory organs are modified from organs adapted to air ...
... reason for believing that the immediate ancestors of insects were terrestrial animals , and the aquatic larvæ mentioned show their secondary character by the fact that their respiratory organs are modified from organs adapted to air ...
Page 44
... reason for believing that the ancestor of the Crustacea was segmented , and that it was probably related to the Polychaeta . How is this apparent contradiction to be explained ? We answer that the Nauplius retains the ancestral habits ...
... reason for believing that the ancestor of the Crustacea was segmented , and that it was probably related to the Polychaeta . How is this apparent contradiction to be explained ? We answer that the Nauplius retains the ancestral habits ...
Page 44
... reason for maintaining the ancestral significance of the Nauplius and Zoæa stages ; in doing so one merely follows the universal rule of science , i . e . reasoning from the known to the unknown . Turning now to the embryonic type of ...
... reason for maintaining the ancestral significance of the Nauplius and Zoæa stages ; in doing so one merely follows the universal rule of science , i . e . reasoning from the known to the unknown . Turning now to the embryonic type 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.