x CONTENTS 



CHAPTER IV 



THE FAUNA OF ALASKA 



PAGE 



On the general features of Alaska, its glaciers, volcanoes and flora- 

 Conditions of Alaska during the Glacial Epoch On the evidences 

 derived from the fossil mammals as to the former climate of 

 the country Evidences of an Asiatic invasion of animals into 

 Alaska The faunistic affinities of Alaska On the former 

 presence of the mammoth in Alaska The fresh-water fishes of 

 Alaska The distribution and origin of the butterflies belonging 

 to the genus Parnassius On the mammals peculiar to Alaska 

 On the relationship of the marine mollusks of the northern 

 Pacific in recent and past times Evidences of a former land 

 bridge near Bering Strait 74-100 



CHAPTER V 



THE ROCKY MOUNTAINS AND THEIR INHABITANTS 



The region of the Great Salt Lake Distribution and origin of the 

 mountain sheep and Rocky Mountain goat On the geological 

 history of the American deer tribe the prong-horn antelope 

 and its origin On the Rocky Mountain flora Accidental 

 distribution as applied to butterflies Description of the 

 American game preserves The great Tertiary deposits and 

 their contents 101-122 



CHAPTER VI 



THE ANIMALS OF THE EASTERN STATES 



On the poverty of lizards in this region The snakes of the eastern 

 states and their affinities The origin and distribution of the 

 garter snakes Rattlesnakes and their range On American 

 tortoises and turtles The giant salamanders of America and 

 Asia On newts and their allies The relationship of the 

 Eastern plants The pine-barren flora The range of the 

 star-nosed mole 123-143 



CHAPTER VII 



THE FAUNA OF THE CONTINENTAL BASIN 



Description of the prairie region and its inhabitants On the extinc- 

 tion of the horse in Amei'ica and the geological history of the 

 horse tribe Prairie dogs and their distribution On the origin 

 and past history of the raccoon On caves and their contents as 

 illustrating the geological history of the fauna The former 



