Yellowstone Trout 219 



from which the cut-throat is being distributed in 

 the West and very generally in the Eastern states, 

 particularly in New England, where they find a 

 favorable habitat and are increasing in numbers 

 and game qualities — a not unusual result among 

 transplanted fish. When their new environment 

 is adapted for them, they often, especially the 

 brown trout and the rainbow, increase in average 

 weight and develop traits of gameness they did 

 not possess in their home waters. 



There is another peculiar condition under 

 which the cut-throat lives and thrives, that 

 requires attention in this brief monograph of 

 the fish. It has been reported from time to 

 time that the angler could catch in the waters 

 of the Yellowstone Park a trout from one pond, 

 and by a mere swing of the rod cook the fish 

 in the boiling water of an adjacent one, without 

 unhooking his quarry. It has been discovered 

 through the work of the United States Fish Com- 

 mission and the researches of Dr. Jordan, that the 

 waters of the geysers and other calcareous and 

 silicious springs do not appear to be objectionable 

 to fishes. In the Yellowstone Lake trout are 

 especially abundant about the hot overflow from 

 the Lake Geyser Basin. The hot water flows 



