Identifier: journalofexperim02harr (
find matches)Title:
The Journal of experimental zoologyYear:
1905 (
1900s)Authors:
Harrison, Ross G. (Ross Granville), 1870-1959 Brooks, William Keith, 1848-1908 Wistar Institute of Anatomy and Biology American Society of ZoologistsSubjects:
ZoologyPublisher:
(New York, etc.) Wiley-Liss (etc.)Contributing Library:
MBLWHOI LibraryDigitizing Sponsor:
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view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:ls (muscle, mesenchyme and caudalendoderm) are entirely lacking, (c/. Figs. 6 and 48.) Figs. 49-51. Three views of one and the same anterior half embryo of about the 250-cell stage;spurted in the 4-celI stage and fixed z hours later. Fig. 49. Dorsal view, superficial focus, showingthe neural plate. Fig. 50. Dorsal view, deeper focus, showing two rows of chorda cells besides severalectoderm and endoderm cells. Fig. 51. Dorsal view, still deeper focus, showing the cells of theventral ectoderm. Fig. 52. Anterior half embryo, dorsal view. Spurted in the 4-cell stage, fixed 22 hours later.The yellow crescent is plainly visible in the injured cells. Sense spots are present but the neural platenever forms a tube. The chorda cells lie in a heap at the left side. There is no trace of muscle sub-tance or of a tail in this anterior half embryo. This embryo is from the same experiment as Figs.57-40; normal larva? of this stage are undergoing metamorphosis. Mosaic Development in Ascidian Eggs. 177Text Appearing After Image: ' Note About Images 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 work.