Proceedings of the American Academy of Arts and Sciences, 20±ÇAmerican Academy of Arts and Sciences., 1885 |
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27 ÆäÀÌÁö
... obtain the complete genealogical history of each cell as far as the 64 - cell stage . In leaving this stage the blastodisc becomes three cells deep in its central portion , and we have been unable to carry the complete identification of ...
... obtain the complete genealogical history of each cell as far as the 64 - cell stage . In leaving this stage the blastodisc becomes three cells deep in its central portion , and we have been unable to carry the complete identification of ...
28 ÆäÀÌÁö
... obtained by tilt- ing the microscope , the tube being inclined at different angles between the vertical and horizontal positions , as recommended by Kingsley and Conn . The eggs were confined in a live - box , and the light controlled ...
... obtained by tilt- ing the microscope , the tube being inclined at different angles between the vertical and horizontal positions , as recommended by Kingsley and Conn . The eggs were confined in a live - box , and the light controlled ...
30 ÆäÀÌÁö
... obtained from eggs hardened in other fluids . Perenyi's fluid consists of four parts of nitric acid ( ten per cent ) ; three parts of alcohol ( ninety per cent ) ; and three parts of chromic acid ( one half per cent ) . Perenyi ...
... obtained from eggs hardened in other fluids . Perenyi's fluid consists of four parts of nitric acid ( ten per cent ) ; three parts of alcohol ( ninety per cent ) ; and three parts of chromic acid ( one half per cent ) . Perenyi ...
36 ÆäÀÌÁö
... obtained . If these ova develop parthenogenetically , as supposed by Cohn 86 and Huxley ; and if , on this account , no polar globules are produced , it might be possible to explain the appearance of an equatorial cleavage prior to the ...
... obtained . If these ova develop parthenogenetically , as supposed by Cohn 86 and Huxley ; and if , on this account , no polar globules are produced , it might be possible to explain the appearance of an equatorial cleavage prior to the ...
42 ÆäÀÌÁö
... obtaining ova from five to ten minutes after fecundation . 66 The polar disc , to which cleavage is at first restricted , has received a variety of names . It is the " Anschwellung " of Rusconi ; the " Bildungsdotter " of Reichert ; the ...
... obtaining ova from five to ten minutes after fecundation . 66 The polar disc , to which cleavage is at first restricted , has received a variety of names . It is the " Anschwellung " of Rusconi ; the " Bildungsdotter " of Reichert ; the ...
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Abdomen abdominal appendages Acad acetic acetic acid acid acute Antenn©¡ 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 Nucul©¡ nutlets oblong observations Olenus ovum pair of legs papill©¡ Paradoxides pedicels periblast petioles plate Point Lévis posterior Potsdam precipitate Primordial fauna Proc pubescent punctate ring River rostrum s©¡pius 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