204 First Annual Report of the 



ined by him on May 25th had eaten 16 snails, 1 June bug, 2 insect 

 larvse — each about 1 inch long with a hard shell (probably a 

 caddice fly larva), 1 hard shell and a lot of small flies and bugs. 



TROUT FOOD* 



Lane's Food for trout consists of the following ingredients: 

 2 quarts animal meal. 

 1% pounds of salt. 

 8 quarts corn meal. 

 16 quarts mill middlings. 

 24 quarts of water brought to a boil. 



These articles are thoroughly cooked, and when properly cooled 

 are pressed through a colander-like receptacle into worm like 

 strings of about a finger length. These " worms " are allowed to 

 dry, and are afterward fed to the trout. They do not disinte- 

 grate rapidly in the water, and seldom fall to the bottom before 

 the fish get them. 



TROUT DISEASES* 



There was considerable loss of brook trout fry at the Adi- 

 rondack hatchery in the spring of 1911. When the eggs from 

 which these fry were hatched were received, they appeared to 

 be in very good condition ; but when the fish hatched they lacked 

 vitality, and there was notable loss. The tail of the fish turned 

 white, the fry lived only a day or two and then died. 



FISH ENEMIES. 



The fish hawk is a very destructive bird at the Oneida station. 

 It attacks the adult bass in the ponds. It does not eat the entire 

 fish, but simply eviscerates its victim and leaves the remainder. 



FISH PARASITES* 



Many of the minnows which are caught in large numbers for 

 the food of black bass and calico bass at the Linlithgo station 

 have been found suffering from the attacks of larval worms which 

 enter the crystalline lens and destroy the sight. It is common to 

 find fish with one eye absent and some are totally blind. The 

 fish is only a temporary host of the larval worm whose final devel- 



