. A manual of zoology. Zoology. 21:; CCELEXTERATA All other important organs arise from the ectoderm. Gonads arise in many species (Lig. 170 from tlic ectoderm of the manubrium; in others. Fir,, 175.âRliiipiihiiirma -rrhilur,!. c. rin;; r;innl; c. oxumbrcUa: i:, gonads; /;, oto cysts; }u. stomach; 11, ncrw riii^-, 0, moulli; ,v, subuinln-cUa; 1", :", tciUaclcs of first and second order; â ;', \cluni, from the same layer covering the suhumhrellar surface of the radial canals (lig. 175), forming in either case conspicuous, often orange or red, tliickeninc;s. Longitudinal ectodermal mus
. A manual of zoology. Zoology. 21:; CCELEXTERATA All other important organs arise from the ectoderm. Gonads arise in many species (Lig. 170 from tlic ectoderm of the manubrium; in others. Fir,, 175.âRliiipiihiiirma -rrhilur,!. c. rin;; r;innl; c. oxumbrcUa: i:, gonads; /;, oto cysts; }u. stomach; 11, ncrw riii^-, 0, moulli; ,v, subuinln-cUa; 1", :", tciUaclcs of first and second order; â ;', \cluni, from the same layer covering the suhumhrellar surface of the radial canals (lig. 175), forming in either case conspicuous, often orange or red, tliickeninc;s. Longitudinal ectodermal muscles move the tentacles in a. 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
