ELEPHANT REMAINS IN CANADA. 139 



lower surface of the jaw. The bottom of the symphysial gutter 

 inclines forwards and downwards with a straight slope at an 

 angle of about 40° with the plane of the under-surface ; but 

 backwards the descent is depressed convex and at an angle of 

 60°. with the same plane. There is a strong rounded elevated 

 margin on each side, which is about three-fourths of an inch in 

 height and width at three inches from the point of the mandible 

 but becomes narrower and less prominent both above and below. 

 It (the gutter) is rounded in the bottom ; and its width at one inch 

 above the most elevated point of the symphysis is two and one- 

 eighth inches. In front of this point it narrows to three-fourths of 

 an inch at the point of the mandible, where it is also very shal- 

 low. Owing to the great height of the jaw, the gutter, on a front 



Fig. 4. — Upper side of a symphysis with the elevated margins of the 

 gutter broken away, g, g, the anterior foramina. 



view, makes a deep notch between the upper halves of the two 

 rami, having a nearly vertical wall on each side. The depth of 

 this notch is five inches, and its width at the top is two and three- 

 fourths inches. Behind the notch, the inner surfaces of the two 

 rami appear to form two nearly vertical parallel planes, for a dis- 

 tance of about nine inches, separated from each other by a space 

 of between two and three-fourths and three inches. They then 

 diverge from each other with an obtusely rounded curve. 



The molar tooth is in a fine state of preservation, and well ex- 

 posed to view. Its length along the crown is eleven inches ; but 

 owing to the manner in which the plates diverge from each other? 

 towards the lower side or base, the extreme length, at about two 



