. A manual of zoology. . Fig. 36. — Sycon gelatinosum. Transverse section through the wall of a cylinder (parallel with the course of the canals), showing one incurrent canal (IC), and one radial {R) throughout their length; s/>, triradiate spicules; sp', oxeote spicules of dermal cortex {dc) ; sfi", tetraradiate spicules of gastral cortex {gc)\ ec, ectoderm; eft, endoderm; pjn, pore membrane ; pf>, prosopyles; ap, apopyle ; di, diaphragm; , excurrent passage; PC, paragastric cavity; em, early embryo; em', late embryo- The arrows indicate the course of the water through the spon
. A manual of zoology. . Fig. 36. — Sycon gelatinosum. Transverse section through the wall of a cylinder (parallel with the course of the canals), showing one incurrent canal (IC), and one radial {R) throughout their length; s/>, triradiate spicules; sp', oxeote spicules of dermal cortex {dc) ; sfi", tetraradiate spicules of gastral cortex {gc)\ ec, ectoderm; eft, endoderm; pjn, pore membrane ; pf>, prosopyles; ap, apopyle ; di, diaphragm; , excurrent passage; PC, paragastric cavity; em, early embryo; em', late embryo- The arrows indicate the course of the water through the sponge. 80. 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1900
