100 MR GOODSIR ON MUSKET-BULLETS FOUND IN THE TUSKS OF THE ELEPHANT. 



jury ; d d irregular ivory bounding the abscess ; e e masses of cement and irregular ivory at the 

 margin of the shot-hole. 



Fig. 8. The external aspect of a portion of a tusk, which had been transversely fractured ; a a the line 

 of fracture united externally by irregular masses of cement. 



Fig. 9. The internal aspect of the same portion of tusk ; a a the line of fracture united by irregular 

 ivory, a portion of which is arranged in a reticular form. This reticular ivory is interesting, as af- 

 fording a natural analysis of the peculiar arrangement of parts in the irregular ivory described in 

 the paper. Each bar of the reticular ivory is traversed longitudinally by a medullary canal, from 

 which radiate secondary canals and Retzian tubes, the whole being coated with regular ivory. This 

 reticular ivory differs from the ordinary form of ossified pulp, only in the greater distance between 

 the Haversian or medullary canals, so that portions of the pulp have remained unossified between 

 them. 



