Trout Breeding. 133 



"fresh-water shrimp," while the asellus, or "water asel," 

 looks somewhat like the "sowbug" found in decayed 

 wood. In some waters these crustaceans grow to the 

 length of three-quarters of an inch, but usually they are 

 smaller. Trout also eat newts or salamanders as well 

 as snails, both the spiral and the ramshorn. Insect 

 larvse will be apt to breed in the ponds without being 

 especially introduced. The gammarus is greatly over- 



CYCLOPS, with eggs (magnified 40 diameters). 



rated as trout food. A few are eaten, but not in the 

 proportion that is usually thought. My searching of 

 stomachs of wild trout under two inches long showed, 

 under the microscope, that Cyclops and Daphnia, two 

 minute forms barely visible to the eye, were the most 

 plentiful. 



On Wilmurt lake, situated on top of a mountain in 

 Herkimer County, N. Y., where no fish but brook trout 



