Distribution 197 



to live, but not thrive lustily, when the temper- 

 ature is slightly over 70°. Such water condi- 

 tions exist all over the temperate zone, and 

 in the elevated portions of the semi-tropical. 

 At the present day these fish are found on the 

 western coast of America from the Arctic Cir- 

 cle to the head of the Gulf of California, and in 

 the streams of the northern mountains of Mexico. 

 In the Old World they have been discovered as 

 far south as the Atlas Mountains of Africa, the 

 mountain streams of Persia, and in the Hindu 

 Kush or Indian Caucasus of the colossal range 

 of the Himalayas. 



On the eastern coast of North America, the 

 red-spotted charr-trout {fofitinalis) is found from 

 Labrador south to the head waters of the Savan- 

 nah, Chattahoochee, Catawba, and French Broad 

 rivers ; and west and northwest of the Mississippi 

 we find at least twenty-three species of our so- 

 called indigenous salmon-trouts, some of them 

 leaping and flashing from the waters of Kam- 

 chatka, while their congeners are disporting in 

 the mountain streams of Arizona and in the 

 lakes of Mexico. 



The many species of trout of the streams west 

 of the Mississippi are not considered indigenous 



