102 Thirly->iiiilh Awuual MrrliiKj 



even on different parts of the same lake. In tlie trout work the eggs 

 from one stream will he very much larger than those from another ; 

 likewise early in the season the eggs will he smaller than during the 

 height of the season; and as the season tapers off the eggs are again 

 smaller. There is great lack of uniformity in size. Of course this is 

 not in a way relevant to Mr. Rower's paper on the growth of eggs. It 

 merely emphasizes, as liis paper does, the necessity for estahlishing a 

 standard. If you want to know how many green eggs you get you must 

 estahlisli a standard for each station where eggs are collected. Then if 

 you are going to judge tiic liatcli l)y the numher of eyed eggs on hand, 

 you nnist cstal)lish anotlier standard for each species and field from 

 wliicli the eggs are taken. 



Air. l'\dlerton spoke ahout the larger eggs coming from the large 

 sized pike perch, and similarly in that part of the Manual of Fish Culture 

 where Mr. Clark is the authority, it is stated that the larger trout eggs 

 are obtained from large fish. In my personal experience at several field 

 stations I got the smallest trout eggs from tlie largest fish. They were 

 from trout ranging from two to five pounds in weight and ran 500 to 

 tiie ounce. 



