. A manual of zoology. Zoology. UlSTOUY OF ZOOLOGY. 39 yyip. I' IG. n.^Cross-spctinns thrniifrli the dorsal reRion of Tritnn emhryos iit diflforent -icps lirom O. Hertwig). In ftlir; meduUarv plate (anlage of spinal cord) »i/> is marKca "ff from the skin fcpidcrmis, <•/)) h\- the medullary folds (mf). In II the i"*"""': hiry plate hv inrollintr of the medullarv folds is converted into a groove, in "' tlie groove has cdosed into a tuhe (ii). the spinal cord, tvhieh has separated from the rest of the ectoderm (epidermisl. r, hody cavity (codom); rh, notochord
. A manual of zoology. Zoology. UlSTOUY OF ZOOLOGY. 39 yyip. I' IG. n.^Cross-spctinns thrniifrli the dorsal reRion of Tritnn emhryos iit diflforent -icps lirom O. Hertwig). In ftlir; meduUarv plate (anlage of spinal cord) »i/> is marKca "ff from the skin fcpidcrmis, <•/)) h\- the medullary folds (mf). In II the i"*"""': hiry plate hv inrollintr of the medullarv folds is converted into a groove, in "' tlie groove has cdosed into a tuhe (ii). the spinal cord, tvhieh has separated from the rest of the ectoderm (epidermisl. r, hody cavity (codom); rh, notochord ; <'V, cavity of primitive somite (myotomel; d0, ydlk-cells; ik, entoderm; lij, lumen of gut; 7)ifc', mfc^ somatic and splanchnic layers of 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 Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
