g MEMOIR ON THE III. 



2. A radius about as large as in the common ox. 



Length internally ...... llHnches. 



Breadth of proximal articulation . . . 3^ " 



distal " . . . . 3i " 



Circumference at middle . . . . 4* " 



3. Two metacarpals of the right and left foot of two different individuals, about 

 as long as, but broader tlian in the common ox. 



Leno-th . . . . .8 inches and 8 inches 3 lines. 



Breadth of proximal articulation 2 " 11 lines and 3 inches 1 line. 



" distal " 3 " and 3 inches 3 lines. 



Circumference at middle . . 5 " 2 lines and. 5 inches 7 lines. 



4. Three metatarsals about as long as in the common ox, but narrower. 



Length . . . . . . . . .9 inches 3 lines. 



Breadth of proximal articulation . . . . " 1 inch 10 " 



" distal " 2 inches 3 " 



Circumference at middle . . . . . 3 " 11 " 



5. Six first phalanges about 2i inches long. 



6. Five second phalanges measuring from li to 1* inches in length. 



§ 2. General History of the Remains of extinct species of American Ox, which 



uaye been previously described. 



Remains of extinct species of ox are also quite abundant in the post pliocene 

 deposits of North America. 



The first distinct species of extinct American ox was announced to the world by 

 Mr. Rembrandt Peale.' It was established upon a fragment of a cranium with a 

 portion of one horn-core attached, which was discovered in the bed of a creek falling 

 into the Ohio River, twelve or fourteen miles north of Big-bone Lick, and was pre- 

 sented to the American Philosophical Society by Dr. Samuel Brown, of Kentucky, 

 and is now deposited in the museum of the Academy of Natural Sciences. 



Notwithstanding the greater size of the specimen as compared with the corre- 

 sponding part of the skull of the Aurochs, Cuvier, who subsequently described a 

 cast of it sent to the museum at Paris by Mr. Peale, considered it as having 

 belonged to the same species,- and in this view he has been generally supported by 

 succeeding writers on the subject. It is, however, exceedingly doubtful, abstractly, 

 whether the same species of Aurochs was ever common to the eastern and western 

 world; and in the absence of any correct evidence to favor such a view, Dr. Harlan 



Account of some Remains of a Species of gigantic Oxen found iu America and other parts of the 

 World, by Mr. Rembrandt Peale. Philosophical Magazine (1803), vol. xv. p. 325, pi. vi. The latter is a 

 good representation of a posterior view of the specimen. 

 " Ossem. Foss. cd. 4, t. vi. p. 287. 



