THE LIFE OF MAMMALS 
remains of thousands of skeletons, the long bones of which were split 
open for the marrow. 
“The northern Paleolithic horse was only ten hands high, probably as 
a result of the dwarfing effects of the severe climate. It was too small an 
animal to be ridden. It was certainly not very different in appearance 
from the only true wild horse which now survives in the world, and was 
Sanborn, Phot. 
PRZEWALSKY'S HORSE. 
Photographs of a pair living in the New 
York Zoological Park in 1905; the 
upper figures in their summer coat, the 
lower one in winter coat. 
possibly the same stock. This is 
Przewalsky’s horse, of the desert of 
Dzungaria, which was discovered by 
Poliakoff in 1881, and demonstrated 
beyond a doubt to be distinct from the wild ass of northern Asia and the Mon- 
golian pony. As in the Paleolithic drawings this horse is unstriped. It is 
covered with thick hair of a dull brown or dun color, and has a woolly under 
covering for winter protection. One of the Przewalsky colts, now in the New 
York Zodlogical Park, probably gives us a living picture of the horse as 
he was known to Paleolithic man 30,000 years ago.” 
360 
Copyright, N. Y. Zod. + 
