OF MASTODONS, WITH REMARKS, ETC. 
3 
caulodon is only the young gigantic Mastodon , is hardly possible, and the 
merit of having contributed to the Fauna of this country, one of its 
largest antediluvian animals, is confirmed to Dr Godman. 
The object which originally prompted this communication, being 
thus accomplished, I might here close it; but from the great number 
of specimens which I have been so fortunate as to have had oppor¬ 
tunities of examining (about forty lower jaws, and upwards of two 
hundred teeth), some facts have been presented, to which my friends 
attach so much interest, as to induce me to lay an account of them be¬ 
fore the Society. 
- The first specimen I shall describe is a fragment of the left side of 
the lower jaw, consisting of the ramus, chin and portion of thecoronoid 
process. (Plate XX., fig. 1 and 2.) This fragment is sixteen inches 
long, and weighs nine pounds. The teeth, as well as the loose tex¬ 
ture of the bone, show it to have belonged to a young animal. The 
condyloid process and angle of the jaw are deficient, and the chin is 
slightly broken, so that it is impossible to determine whether it had 
the foliated termination so conspicuous in the adult. (Plate XXIII., s .) 
The coronoid process rises nearly perpendicularly as in thegiganteum; 
but the ramus of the jaw is rather more cylindrical than in the adult 
of that species. 
This fragment contains two teeth. The posterior one (Plate XX., d) 
had just commenced to pierce the gum; its crown is perfect, but its 
roots are not yet formed. This tooth is four inches and one-tenth* 
long, and two inches and seven-tenths broad. It has three wedge- 
shaped denticules, each of which is divided, by a longitudinal groove, 
into two processes, the inner of which is somewhat the wider; and 
each of these processes is superficially divided into two or more points 
—the exterior points being the largest. 
The anterior tooth (Plate XX., e) resembles that just described in its 
general characters; its crown is, however, somewhat worn, particularly 
its anterior points. Its length is three inches and three-tenths, its 
breadth is two inches and five-tenths. 
* All the measures were taken with callipers. 
