60 FISH HATCHING. 



insects ; but, if Mr. Biicklancl will put it in 

 water and examine it closely, lie will find a 

 small spine (?) of a fisli. — H. E. Fox (Rydal, 

 Jan. 20).^' 



["I have examined the contents of this 

 bird's gizzard, and, as in the former case, 

 can find nothing but a mass of the horny 

 cases, legs, hooks, &c., of water insects, and 

 not a trace of fish ova. I could not, unfor- 

 tunately, find the spine mentioned by Mr. 

 Fox. In the last specimen I examined, there 

 were several spine-like bodies, which, how- 

 ever, were forms of infusoria. From the 

 evidence now before us, I think we can 

 hardly help the conclusion that the water- 

 ouzel goes to the spawning-beds, not to eat 

 the spawn, but to eat the insects that destroy 

 the spawn, and which are, as pisciculturists 



