The Shipley Collection of Scientific Papers, Volume 331890 - Zoology |
From inside the book
Results 1-5 of 37
Page 9
... primitive du corps animal " in his “ Traité sur le vénin de la Vipere , " Florence , 1781 ( Ph . viii . figs . 19 , 20 ) . 5 Traité d'Anatomie et de Physiologie végétales , t . i . , Paris , An x .; Exposition de la Theorie de l ...
... primitive du corps animal " in his “ Traité sur le vénin de la Vipere , " Florence , 1781 ( Ph . viii . figs . 19 , 20 ) . 5 Traité d'Anatomie et de Physiologie végétales , t . i . , Paris , An x .; Exposition de la Theorie de l ...
Page 44
... primitive group of the Branchipoda , the Nauplius shows indications of a postoral segmentation ; whereas in the highly specialised Cirripedes and Ostracods we get a specialised Nauplius . In the former case this is brought about by the ...
... primitive group of the Branchipoda , the Nauplius shows indications of a postoral segmentation ; whereas in the highly specialised Cirripedes and Ostracods we get a specialised Nauplius . In the former case this is brought about by the ...
Page 44
... primitive character , and is accordingly suppressed in the larva ; though here in comparing the Zoææ of the various groups we meet with a precise parallel to the case of the Nauplii . The Zoea of the un- differentiated Schizopod ...
... primitive character , and is accordingly suppressed in the larva ; though here in comparing the Zoææ of the various groups we meet with a precise parallel to the case of the Nauplii . The Zoea of the un- differentiated Schizopod ...
Page 44
... primitive mode of development should appear in Paludina Brachiopods and Amphioxus . In all these cases the yolk is exceedingly small in quantity and uniformly distributed ; in the first two cases we have a pseudo - embryonic development ...
... primitive mode of development should appear in Paludina Brachiopods and Amphioxus . In all these cases the yolk is exceedingly small in quantity and uniformly distributed ; in the first two cases we have a pseudo - embryonic development ...
Page 44
... primitive ? I think we may fairly say none ; but that on the contrary it shows manifest signs of its secondary character ; the egg is yolky , and the development proceeds directly to the medusa form , the hydra form being suppressed ...
... primitive ? I think we may fairly say none ; but that on the contrary it shows manifest signs of its secondary character ; the egg is yolky , and the development proceeds directly to the medusa form , the hydra form being suppressed ...
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.