. A manual of zoology. Zoology. 70 GENERAL TRIXCirLES OF ZOOLOGY (fig. 33), of the gut, of tlie boil_\' ca\ily, or of parts cut olT from this (fig. 34). This connection of the sexual cells with the epithelium has a deeper meaning since man)- organisms, particularly those of low structure, consist of epithelia and therefore must develop. Fig. ^v—Germinal epithelium of a medusa, ck. ectoderm; 01, entoderm; 0, egg; e, cpiUielium. their sexual products in epithelium. In other words, sexual and epithelial cells are the oldest elements of the animal Ixxly, and hence very early came into
. A manual of zoology. Zoology. 70 GENERAL TRIXCirLES OF ZOOLOGY (fig. 33), of the gut, of tlie boil_\' ca\ily, or of parts cut olT from this (fig. 34). This connection of the sexual cells with the epithelium has a deeper meaning since man)- organisms, particularly those of low structure, consist of epithelia and therefore must develop. Fig. ^v—Germinal epithelium of a medusa, ck. ectoderm; 01, entoderm; 0, egg; e, cpiUielium. their sexual products in epithelium. In other words, sexual and epithelial cells are the oldest elements of the animal Ixxly, and hence very early came into relation with one another. Sexual epithelium (or gcniiiiuil cpillu-Hiiiii) like glandular epithelium has a tendencv to grow into the subepithelial tissues in the form 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, ed. and tr. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
