Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Томи 41 – 42The Society, 1902 |
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... true , historically ascertained generic types has the advantage of possessing a permanent framework , even if later on the position of the objects designated be altered . And by using correct names a great advantage is secured to ...
... true , historically ascertained generic types has the advantage of possessing a permanent framework , even if later on the position of the objects designated be altered . And by using correct names a great advantage is secured to ...
Сторінка 16
... true type of Luperina Boisd . ( see Grote , Can . Ent . , 1900 , 211 ) . Boisduval , in 1829 , refers both nictitans ( chrysographa ) and nictitans ( didyma ) to Apamea . PSEUDANARTA . 1878. GROTE , Bull . U. S. Geol . Surv . , 178 ...
... true type of Luperina Boisd . ( see Grote , Can . Ent . , 1900 , 211 ) . Boisduval , in 1829 , refers both nictitans ( chrysographa ) and nictitans ( didyma ) to Apamea . PSEUDANARTA . 1878. GROTE , Bull . U. S. Geol . Surv . , 178 ...
Сторінка 44
... true where it is possible to use an immersion lens in the study of entire preparations . Further , more points of structure can be shown in a single figure of this kind than in dozens of figures of serial sections . Of course , serial ...
... true where it is possible to use an immersion lens in the study of entire preparations . Further , more points of structure can be shown in a single figure of this kind than in dozens of figures of serial sections . Of course , serial ...
Сторінка 52
... true the animal pole of the egg coincides very nearly with the point where the line from Ce in Figs . 20 and 24 touches the ectoderm . The bending of the gastrula axis which has just been described shows that Terebratulina , like most ...
... true the animal pole of the egg coincides very nearly with the point where the line from Ce in Figs . 20 and 24 touches the ectoderm . The bending of the gastrula axis which has just been described shows that Terebratulina , like most ...
Сторінка 81
... true also of older follicles which have recently discharged the sperm . It will thus be seen that a series of stages , illustrating the com- plete history of the changes through which the germ cell pass , can be obtained only by an ...
... true also of older follicles which have recently discharged the sperm . It will thus be seen that a series of stages , illustrating the com- plete history of the changes through which the germ cell pass , can be obtained only by an ...
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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