194 ON THE FOSEIIi BONES OF PACHYDERMATOUS QUADRUPEDS. 



Its greater breadth 0,635 



Breadth at the neck 0,1 91 



Length of the spine 0,700 



Its greatest height 0, 1 72 



Length of the humerus. 0,835 



Distance of the posterior extremity of the head to the anterior 



extremity of the great tuberosity 0,246 



Breadth between the two condyles 0,235 



Antero-posterior diameter of the superior head 0, 1 85 



Smaller diameter of the body 0,1 05 



Length of the radius 0,675 



■- cubitus 0,730 



' -~- carpus 0,124 



- greatest bone of the metacarpus 0, 1 50 



OS ilium . 0,924 



Breadth at its widened part. 0,41 6 



of its neck 0,132 



Distance between the spines of the two bones 1.127 



Length of the femur. ....................... ...... 0,980 



Breadth above 0,255 



below 0,185 



Diameter of the body at the middle part. ................. 0,120 



— upper head. ........................... 0,130 



Length of the tibia ................................... 0,566 



Breadth above. . 0,180 



. below. ... 0,146 



Length of the fibula . . 0,560 



' posterior process of the os calcis 0,083 



— — - metacarpal bone of the middle toe. ........... 0,120 



Article II. 



Special Observations on the Structure, Growth, and Succession of the 

 Molar Teeth of the Elephant, and on their Differences from Age and 

 Position. 



Wb made these observations on the three elephants of India, which 

 we had an opportunity of dissecting ; but we must say, that we were 

 guided by the excellent work of our respectable confrere, the late 

 M. Tenon, on the teeth of the horse. What we saw particular with 

 respect to those of the elephant, is owing merely to their size and their 

 peculiar character of configuration, which renders their variations in 

 form much more striking. 



We must also acknowledge, that excellent observations had been 

 already made be ore us, on the particular subject of the teeth of the 

 elephant, by M. Pallas*, Pierre Camper and his son Adrianf, M. Corse, 

 Sir Everard Home:{:, and M. Blake §: the three latter in particular 



* Acad. Petrop. Nov. Com. xiii, p. 472. 

 f Descrip. Anat. d'ua Elephant. 

 t Phil. Transact, for, 1790. 



§ Essay on the Structure and Formation of the Teeth ia Man and various A. limals, 

 by Robert Blake, M.D. Dublin, 1801. 8vo. 



