Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 859
lar arrangement around the medullarycanals; but each system of tubuli is continued onAvards throughits own division of the tooth, the individual tubes sometimesgiving-off lateral branches, whilst in other instances their trunksbifurcate. This arrangement is peculiarly well displayed, whensections… … Transverse Section of Tooth of Myliobates(Eagle Ray) viewed as an opaque object. cavity (Fig. 446), and the remainder destitute of vascular canals ;but there are intermediate cases (as in the teeth of the great fossil Sloths) in which the in-Fig. 445. ner portion of the dentine is traversed by…
Microscopy · Biology
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