Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Томи 41 – 42The Society, 1902 |
З цієї книги
Результати 1-5 із 100
Сторінка 9
... nature , not relying upon descriptions or figures , and that his syste- matic list is at the same time the catalogue of his collection . He gives no descriptions of his genera , any more than Hübner in the Tentamen . BOISDUVAL ...
... nature , not relying upon descriptions or figures , and that his syste- matic list is at the same time the catalogue of his collection . He gives no descriptions of his genera , any more than Hübner in the Tentamen . BOISDUVAL ...
Сторінка 94
... nature of the case ( spermatophore ) in which they are enclosed . With regard to the spermatozoon of Astacus fluviatilis , he states that the head develops from a structure arising near the nucleus , while the nucleus itself ...
... nature of the case ( spermatophore ) in which they are enclosed . With regard to the spermatozoon of Astacus fluviatilis , he states that the head develops from a structure arising near the nucleus , while the nucleus itself ...
Сторінка 99
... nature so close that they appear as units . Concerning their origin in Oniscus , I can confirm M. Gilson's statement that the formation of the bundle takes place in a plasmodium , cell boundaries being for a time entirely absent , and ...
... nature so close that they appear as units . Concerning their origin in Oniscus , I can confirm M. Gilson's statement that the formation of the bundle takes place in a plasmodium , cell boundaries being for a time entirely absent , and ...
Сторінка 102
... nature . For the other forms studied no bodies of any kind lying in the cytoplasm are shown . The substance seems to be unusually prominent in Crangon and Astacus . The cells of both are of large size . 1891. vom Rath settled the ...
... nature . For the other forms studied no bodies of any kind lying in the cytoplasm are shown . The substance seems to be unusually prominent in Crangon and Astacus . The cells of both are of large size . 1891. vom Rath settled the ...
Сторінка 120
... nature of these deposits and the distri- bution , condition and nature of the animal remains found in them . W. D. Johnson , in his paper on " The High Plains and their Utili- zation , " published in the Twenty - first Annual Report of ...
... nature of these deposits and the distri- bution , condition and nature of the animal remains found in them . W. D. Johnson , in his paper on " The High Plains and their Utili- zation , " published in the Twenty - first Annual Report of ...
Інші видання - Показати все
Загальні терміни та фрази
Africa AMER AMERICAN PHILOSOPHICAL SOCIETY animals appear April Asia Australia auta autic beds belong blastopore body brachiopods Cambaroides Cambarus canals cells Central chromosomes cœlom connection contains crude oil Crustacea crystals curves Decapods deposits distillates distribution division domeykite drones eggs enteron Eocene equation evidence existence fact fauna Feb'y fertilization follicle formation forms fossils freshwater genera genus geographer geological Greater Antilles hydrocarbons islands Jan'y Jurassic land larva larvæ later Lower Cretaceous male mantle mass Mesozoic method Mexico Miocene nature Noctua North northern nuclei observed Ocean Oligocene origin parthenogenesis Pennsylvania petroleum Philadelphia PHILOS plate Pliocene polar body posterior Potamobius present probably PROC produced Prof queen region relation represented river sandstones separated shown solution South America southern species spermatocyte spermatogonia spermatozoa stage Terebratulina Tertiary theory tion Upper Cretaceous Zool