Mr. Home’s Observations , &c. 
s3 2 
which was seen in the last Plate,) now come to perfection, and 
occupying its proper place in the jaw ; there are also imperfect 
remains of the sockets of the smaller grinders. In this Plate 
the figure is on a scale of one-third of an inch to an inch. 
Plate XXIII. Represents a section of the grinding tooth of the 
animal incognitum, (on a scale of half an inch to an inch,) to 
shew the internal structure, and the mode in which the tooth is 
formed upon the pulp. From this section it is evident, that this 
tooth, like that of the elephant, does not arrive at perfection in 
all its parts at the same time : one portion of the tooth is first 
completed, and afterwards, in succession, the other parts. The 
part which is nearly solid is the first formed ; and the large ca- 
vity contained the pulp upon which the rest of the body of the 
tooth was to have been made solid. 
