. A manual of zoology. Zoology. CALCItiP0]SGI3i. 225 a kind of gastrulation takes place, the blastopore (fig. 100, B) closes, and the osculum, an entirely new formation, arises at the opposite "^^i\m Fig. 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