190 MAMMALS. 



in India or its neighbourhood, by what route can this species have reached Nebraska ? At the 

 miocene epoch we know of no other species except in India. How can the gidf between these 

 two distant regions be bridged over ? By Peru, and thence northwards ? No ; the species found 

 on the Andes belong not to the Elephant, but to the Mastodon, and to its more recent and 

 northern tj^pe, and they are more probably the result of migration from the north under the cold 

 of the glacial epoch. No miocene remains of any Proboscidean have been found in South Ame- 

 rica. By Bhering's Straits or the Aleutian Isles from Asia ? By a direct land connexion between 

 China and California, rid the Sandwich Islands ? By a continental union between Europe and 

 America ? There is little to guide us to a choice between these or other similar contrivances by 

 which an ingenious mind might seek to unite the two lands in question, and it would not be 

 difhcult to find arguments in favour of every one of them. 



