188 American Fisheries Society 



down to 36°, carried them by rail a thousand miles and 

 on a change of railroad line, thence 35 miles by wagon 

 road to a mountain lake (10,000 feet elevation) — the trip 

 in all lasting four days and four nights. During this 

 time, the water was not changed in the cans, but by add- 

 ing ice and pouring out the surplus water, we kept con- 

 ditions so that the loss did not exceed 2% from trans- 

 portation. None died but from natural causes. The 

 lake in which they were placed was an artificial reser- 

 voir above the falls near timber line. It never had a 

 fish in it and these brook trout grew to measure twelve 

 inches in length in two years. That is one instance that 

 proves how fish can be handled in transportation, even 

 in ice-water, without loss at the time or thereafter. 



In our lakes, the trouts feed on the young of the sala- 

 mander or water dog, the leech, the fresh-water snail 

 and the fresh-water shrimp. When abundance of the 

 latter are found in our mountain lakes, the trout feed- 

 ing on them, the flesh of the fish is red, and during the 

 spawning season the male fish puts on the brightest scar- 

 let colors on the belly and below the lateral line. This 

 only in waters where this crustacean exists. In all 

 waters where the fish diet is on the young of the salaman- 

 der, or the young of the inferior varieties of fishes, as 

 well as the hellgrammite and caddis fly, the flesh of this 

 fish is either a pale yellow or white. 



I find that the streams that flow from the Continental 

 Divide to the Atlantic Ocean and through the great Utah 

 Basin to the Gulf of California, contain the cutthroat 

 trout and its sub-species with but two exceptions: the 

 North Platte and the Powder rivers and their tributaries 

 in Wyoming, the latter streams never had any trout of 

 any kind in them naturally. Since my investigations in 

 the '80's, these, as well as most other streams, have been 

 liberally stocked with trout of the two varieties intro- 

 duced — rainbow and brook, by the Wyoming hatcheries 

 and the national fish commissions. During the years 



