. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. I"KM.\TION OF GERM LAYKRS IN ACTINIA 'HENSIS. 345 ha .ined very nearly the appearance of the original < clU. The endoderm cells have in»\v become much in proportion to their height, tlu-ir cytoplasm is much [ess than formerly, and take- the -tain- [ess readily, \vhile the IHH l<-i have bi-come markedly le-- con-picuous. In -ome ons, uherc the body of the embr\o i- mo-t contracted, espe- cially about thi n of the forming -tomodeiim. the oiitline- o! the i-ndoderm cell- are \«-r\ iu
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. I"KM.\TION OF GERM LAYKRS IN ACTINIA 'HENSIS. 345 ha .ined very nearly the appearance of the original < clU. The endoderm cells have in»\v become much in proportion to their height, tlu-ir cytoplasm is much [ess than formerly, and take- the -tain- [ess readily, \vhile the IHH l<-i have bi-come markedly le-- con-picuous. In -ome ons, uherc the body of the embr\o i- mo-t contracted, espe- cially about thi n of the forming -tomodeiim. the oiitline- o! the i-ndoderm cell- are \«-r\ iudi-tinct , and indeed iinpo--ihle lo ..in al the proximal end- of the I eitl 7 . ;. Iii d tO the int. ,,t the na -ho\\ n in McMuiiiih'- I ig. [Q, I'l. it i- ii:. m\ I ig. o. \\ith the ' of tin- mil': ' •:/«/ v;i\«-n bj \ppellof. In the la-t iiu-nt i< nied form, \\heiv th<- eixlo- \ di-lamination. thei LfS .it the time of the I'leaUiiu through o| the m«iUth o; ideil thinniiu I'nih i;ei-m la\er- at the point \\here the mouth «>\ pciiiii'< \\ill appear. When the mouth ha- l»eeii formed tlu- ti--ue- are \er\- thin all around it, and in a longitudinal -ectioii there ap|iear- , the mouth thi- thin area in-tea<l of the more thickened ana \\hich is found about the ^a-tro]iore i an iiua^in.: trula. So that in some in-tance- at least, McMurrii h'- critici-m of the interpretation of -ecti»n-. of \\hole mount- \\ould not appl\ .. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine B
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
