Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 571
(Gosse). When a mass of this sort is cut-into, it is found to be channelled-FiG. 231. Fig. 232. out, somewhat like a sponge, by ramify-ing canals; the ventsof which open intothe stomachal cavi-ties of the polypes,which are thusbrought into freecommunication witheach other,—a cha-racter that… … Pig. 231. Spicules of Gorgonia guttata.Fig. 232. Spicules of Muricea elongata. ASTEROID AN^D HELIAN^THOID POLYPES. 549 but no cilia can be discerned on their external surfaces. Thetissue of this spongy poljpidom is strengthened throughout,like that of Sponges (§ 296), with mineral spicules…
Microscopy
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