. Comparative anatomy and physiology. . the body walls of a Hydra we find that the en- dodermal cells vary consider- ably in size, and that, while some are provided with n c;i n o-l p 1 nn cr Fig. 52.—Longitudinal Section of the Body of -L v A .1 Ck oi. i. 1 «. -A *-' J. \J ta» , . -. T - i i i* fiii* j_* a Hydra, killed in full digestion. Tiagellum, OtlierS eCi Ectoderm ; en, endoderm ; mp, muscular pro- ova rli G-i-iTTr'tlTr cesses; d, a diatom ;/, food particles. (After aiSLlllCtiy ) auiOBboid in form, and give off large pseudopodia (Fig. 52) ; within these cells dark-coloure

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. Comparative anatomy and physiology. . the body walls of a Hydra we find that the en- dodermal cells vary consider- ably in size, and that, while some are provided with n c;i n o-l p 1 nn cr Fig. 52.—Longitudinal Section of the Body of -L v A .1 Ck oi. i. 1 «. -A *-' J. \J ta» , . -. T - i i i* fiii* j_* a Hydra, killed in full digestion. Tiagellum, OtlierS eCi Ectoderm ; en, endoderm ; mp, muscular pro- ova rli G-i-iTTr'tlTr cesses; d, a diatom ;/, food particles. (After aiSLlllCtiy ) auiOBboid in form, and give off large pseudopodia (Fig. 52) ; within these cells dark-coloured granules of various sizes are to be detected, and these food-particles are sometimes found to be " half in and half out of the protoplasm " (T. J. Parker). In such a form, therefore, as the Hydra, there would not seem to be, as in Man and most 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 Bell, F. J. (Francis Jeffrey), 1855-1924. London, Cassell

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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1885