Proceedings of the American Academy of Arts and Sciences, 20권American Academy of Arts and Sciences., 1885 |
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33 페이지
... . " Kongl . Vetensk . Akad . Handl . , 1848. ( Translation , Arch . f . Naturgeschichte , XV . Jahrg . , 1849 , p . 312. ) VOL . XX . ( N. 8. XII . ) 3 cleavage - groove , and a more or less distinct OF ARTS AND SCIENCES . 33.
... . " Kongl . Vetensk . Akad . Handl . , 1848. ( Translation , Arch . f . Naturgeschichte , XV . Jahrg . , 1849 , p . 312. ) VOL . XX . ( N. 8. XII . ) 3 cleavage - groove , and a more or less distinct OF ARTS AND SCIENCES . 33.
34 페이지
cleavage - groove , and a more or less distinct constriction between the margin of the disc and the yolk . In Nassa ... groove . It is plainly a matter of fundamental importance , especially in ova with a pronounced polar segregation of ...
cleavage - groove , and a more or less distinct constriction between the margin of the disc and the yolk . In Nassa ... groove . It is plainly a matter of fundamental importance , especially in ova with a pronounced polar segregation of ...
37 페이지
... groove , a very important exception to the general rule will be established . If , on the other hand , it turns out that the first cleavage is meridian , it will be difficult to reconcile this fact with Van Beneden's opinion on the ...
... groove , a very important exception to the general rule will be established . If , on the other hand , it turns out that the first cleavage is meridian , it will be difficult to reconcile this fact with Van Beneden's opinion on the ...
41 페이지
... groove appears . Experiments di- rected to this end also gave negative results . The same holds true of the third cleavage , and probably of all subsequent ones . A very suggestive fact was brought out in regard to the third cleav- age ...
... groove appears . Experiments di- rected to this end also gave negative results . The same holds true of the third cleavage , and probably of all subsequent ones . A very suggestive fact was brought out in regard to the third cleav- age ...
42 페이지
... groove begins , is a short period of not more than thirty minutes ; but it is a period of special interest in the history of the nuclei , as will presently be seen . We have watched this period through twice on artificially fertilized ...
... groove begins , is a short period of not more than thirty minutes ; but it is a period of special interest in the history of the nuclei , as will presently be seen . We have watched this period through twice on artificially fertilized ...
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Abdomen abdominal appendages Acad acetic acetic acid acid acute Antennæ anthracene appears areola Astacus Barrande base Bentham blastodisc blastomeres border Boston bracts branches broad California calyx Cambarus Cambridge carapace cells Cephalothorax cervical groove chela ciliate cleavage cleavage-plane collected corolla difference of potential Dikelocephalus dorsal Emmons entoderm Eritrichium faune feet flowers foliis fossils fruit genera genus glabrous Graptolites Gray gynobasi Hagen inches long lateral leaflets leaves length less limestone lines long lobes longis Magn male margin maxillipeds median Mountains nearly nuclei Nuculæ nutlets oblong observations Olenus ovum pair of legs papillæ Paradoxides pedicels periblast petioles plate Point Lévis posterior Potsdam precipitate Primordial fauna Proc pubescent punctate ring River rostrum sæpius sandstone schists second fauna segment sepals short side Silurian slates slender somites species specimens spermogonia spines stars superficial tension surface Taconic system telson third tion Trilobites tube upper ventral