Memoir upon lluing. and fossil Elephants. 55 



1?, e, e, €, the enamel which begins to be deposited upon 

 this lamina. 



f, the rest of the capsule. 



g, gi extremities of the transverse laminae of the capsule. 

 h, h, bases of the small transverse walls of the pulpy nu- 

 cleus. 



j, ?',?', laminae of the tooth which envelop them. 



A, k^ enamel which begins to be deposited upon these la- 

 minae. 



Fig. 4. represents the last small walls of the pulpy nu- 

 cleus detached from the rest, and separated from each other. 



c, the laminse in the shape of a small horn, which had 

 begun to form upon the notches of the most anterior. 



i, those which had only sprung up upon the notches of 

 the one before the last, 



c, the last of all, which has not as yet any hard envelop. 



Fig. 5. a lamina of a germ of the tooth of an Indian ele- 

 phant, viewed on its broad face. 



a, c, its part which is soon to shoot out of the capsule 

 and the gtim, and on which we already see the cortical 

 spread, as if by drops. 



li, h, its middle part, where there is not as yet, upon the 

 substance called osseous, any thing else than enamel, like 

 threads of velvet. 



c, c, its part of the base, or the substance called osseous, 

 is as yet bare, without either enamel or cortical. 



Fig. 6. a similar lamina of the African elephant. 



o, the ridge, which gives to the section of the laminae of 

 this species the figure of a lozenge. 



Article III. 

 Upon the Tusks of Elephants ; the Stniciure, Growth, and. 

 distinguishing Characters of the Ivory, and its Diseases. 

 Conclusion of tJie general Remarks upon the Teeth. 



VVe shall not stop to refute the opinion of some among 

 the moderns *, that the tusks of elephants are horns. This 



* I.udolph. jEthiop. lib. i, cap. 10. Perrault, DescrJptioa de raiephant de 

 Vcnaillcs, &c. 



D 4 was 



