Proceedings of the American Academy of Arts and Sciences, 20권American Academy of Arts and Sciences., 1885 |
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27 페이지
... cleavage phenomena has been illus- trated in so many cases in recent years , that it is now fast becoming unnecessary to insist upon it . Remembering that the histogenetic sundering of the embryonic material actually begins with the ...
... cleavage phenomena has been illus- trated in so many cases in recent years , that it is now fast becoming unnecessary to insist upon it . Remembering that the histogenetic sundering of the embryonic material actually begins with the ...
28 페이지
... cleavage , beginning with the mo- ment of fecundation , were first of all followed many times over in the living egg . Profile views and optical sections were obtained by tilt- ing the microscope , the tube being inclined at different ...
... cleavage , beginning with the mo- ment of fecundation , were first of all followed many times over in the living egg . Profile views and optical sections were obtained by tilt- ing the microscope , the tube being inclined at different ...
29 페이지
... cleavage . It is therefore necessary to use some reagent that kills instantly . For this purpose a weak solution of ... cleavage lines , the cleavage cavity , and the nuclear figures , are well preserved . The relation of the blastoderm ...
... cleavage . It is therefore necessary to use some reagent that kills instantly . For this purpose a weak solution of ... cleavage lines , the cleavage cavity , and the nuclear figures , are well preserved . The relation of the blastoderm ...
31 페이지
... cleavage of the yolk in some teleostean ova , as first noted by Mr. Agassiz . 17 Klein , E. " Development of Common Trout . " Quart . Jour . Mic . Sci . , XVI . , p . 127 , 1876 . 18 Ryder , John A. " Development of Silver Gar . " Bull ...
... cleavage of the yolk in some teleostean ova , as first noted by Mr. Agassiz . 17 Klein , E. " Development of Common Trout . " Quart . Jour . Mic . Sci . , XVI . , p . 127 , 1876 . 18 Ryder , John A. " Development of Silver Gar . " Bull ...
32 페이지
... cleavage process begins ; and even the blastodisc and the periblast , at first continuous , soon part company without the direct intervention of cleavage . In these respects this ovum repre- sents a higher type than does the ...
... cleavage process begins ; and even the blastodisc and the periblast , at first continuous , soon part company without the direct intervention of cleavage . In these respects this ovum repre- sents a higher type than does the ...
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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