. The Bible and science. Fig. 60.—Syncoryne, with a number of budding medusae on it at different .stagea(o—e) of development. After Desor. the mouth of the bell. On the clapper, ormanubrium, as it is called, sperm cells and ova areproduced, and the ova, when fertilized, develop anembrjO, just as in the hydra. But in some generathe process does not stop at the formation of a bell-shaped body detaches itself from the pa-rent and swims about. It develops a mouth at the ACTINOZOA. 137 extremity of the manubrium, becomes thus an inde-pendent animal, and rapidly grows, sometimes attainingan
. The Bible and science. Fig. 60.—Syncoryne, with a number of budding medusae on it at different .stagea(o—e) of development. After Desor. the mouth of the bell. On the clapper, ormanubrium, as it is called, sperm cells and ova areproduced, and the ova, when fertilized, develop anembrjO, just as in the hydra. But in some generathe process does not stop at the formation of a bell-shaped body detaches itself from the pa-rent and swims about. It develops a mouth at the ACTINOZOA. 137 extremity of the manubrium, becomes thus an inde-pendent animal, and rapidly grows, sometimes attainingan enormous size, and forming the well-known jelly-fish of our Fig. 6].—a portion of a colony of hydroid polj-ps with budding medusae, vpp,nutritive polyps, ahcdef, ditierent stages of budding medusae, wm, freemedusae in different positions. Closely allied to the hydra tribe is the sea-anemoneor actinia, and its allies Actinozoa. They resemblethe hydra in the body cavity being also the diges-tive canal, but they differ from it in there being a partial division between them, tor a rudimentarv 138 SEA-ANEMONE. gullet passes down a certain distance from the mouth,and then opens into the general body-cavity. Fromthe end of this tube little septa pass to the bodywall, and hold it in joosition. Around the mouth area number of contractile tentacles, which, as well asthe body of the animal, are often brightly coloured,
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