264 THE ZOOLOGIST. 



Breast Water Wheel. 



So far as could be observed, the action of this wheel on Sea- 

 Trout of ^ lb. to 2 lb., and Trout (Lochleven) of the size of 

 Smolts was nil. A dead fish came down at once, but the living 

 remained in the tail-race. 



Trout and Carp used in Experiments in Ireland : — 



9-in. Rainbow Trout were hatched in April, 1898. 

 Small „ (4Mn. to6in.) „ April, 1900. 



,, fontinalis 

 ,, levenensis 

 Common Trout 

 Carp, about 5 in. 



March, 1900. 



February, 1900. 



1900. 



June, 1899. 



