Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . dages tothe spine, although their function is somewhatdoubtful. Each of these consists of a thin cal-careous stalk, surmounted by a curious pincer-likeapparatus, the whole being invested by the generalanimal membrane of the Echinus. Eig. 6± representsthe head of a pedicellaria. The pincers are double,and are formed of a fine calcareous network, resem-bling that of the shell. The edges of each limb ofthe pincers are serrated. Thus much for the external portion of the skele-ton. Inter
Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . dages tothe spine, although their function is somewhatdoubtful. Each of these consists of a thin cal-careous stalk, surmounted by a curious pincer-likeapparatus, the whole being invested by the generalanimal membrane of the Echinus. Eig. 6± representsthe head of a pedicellaria. The pincers are double,and are formed of a fine calcareous network, resem-bling that of the shell. The edges of each limb ofthe pincers are serrated. Thus much for the external portion of the skele-ton. Internally, the only part of the animal requiring April 1,1867.] HARDWICKES SCIENCE-GOSSIP. 83 the support of a skeleton is that connected withthe movements of the teeth and jaws. This oral skeleton consists of the teeth, theplates to which they are attached, and the pro-cesses for the attachment of the muscles. From itscurious form it was compared by Aristotle to alantern, and hence is now often called the Lanternof Aristotle; it is a well-known seaside teeth resemble somewhat the front teeth of a.
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