372 Notice of Dr. Warren’s Mastodon Giganteus. 
in their sockets after the soft parts which retained them were decom- 
o as to loosen their attachments. For the weight of the head 
a new im nce to this tusk, as one distinctive character between the 
g astodon, and the genus Elephas; a distinction which M. de 
lainville, Dr. Fal and others, have been willing to pass over. 
with a horizontal line of about 45°. It has a cavity an inch and @ 
in diameter at the internal extremity, the thickness of the ge being 
one-fourth of an inch; this cavity is of a conical form, and two 
deep. The rest of the tusk appears to be solid. The anterior extrem 
ity is rounded and about an inch in diameter; on one side it h 
Worn away to the extent of four inches. ‘The worn surface 1s ce 
ternal layer is exposed in this abrasion, and exhibits the thickness of an 
a number of circles, to the amount of ten or eleven, extending me 
€s€ strie are distant from each other from a fourth to an © of 
t is seen 
It 
to be composed of lamine about the sixth of an inch in thickness 
rm and fF, ¢. | ep f decomposition. 
n 
Vs 
