Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 1011
arly well displayed, whensections of teeth constructed upon this type are viewed as opaqueobjects (fig. 696). In the teeth of the higher Vertebrata, however,we usually find the centre excavated into a single cavity (tig. 097),and the remainder destitute of vascular canals ; but there are… … Fig. 09.4.—Perpendicohvi Motion <>f tooth of Lammi, moderately en- larged, showing network of me-dullary i-aiials. FlQ. 695i—Trans\ri se Motionof DOT tion of tooth of Pristis, more highly magnified, showing orifices of me-dullary cuiuiIh, with NVHteuiN of radiating and inotoolating tuhn I i.…
Microscopy
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