50 FISH HATCHING. 



Mr. Godfrey, the proprietor of Thorney 

 Broad Fishery, near Uxbridge, tells me that 

 at the spawning time the roach actually 

 covers the weeds near his weir ; the water 

 shrimps and other insects come down upon 

 them like the hop dogs upon the hops in 

 Kent, and in a very short time clear them 

 almost entirely away. It is a question 

 whether the caddis worm attacks eggs or 

 not. I rather think not, but I am not yet 

 certain.* 



Besides the water shrimp we have the 

 larva of the May-fly (specimen exhibited), 

 a sort of just retribution against the fish, 

 who will eat them when they turn into 

 May-flies. These formidable creatures do 



* See in Appendix an account of some curious experiments 

 on the caddis, by Mr. Smee. 



