86 American Fisheries Society 



shipped from Pennsylvania which wandered around the country for a month 

 and finally reached the hatchery from which it was shipped without any 

 tags on and with the eggs all frozen. 



I wish you would all consider this point. We distribute eggs from 

 various commercial dealers to all of the hatcheries which handle trout. 

 We buy from as many commercial dealers as we can get reasonable prices 

 from and feel sure that the eggs are good. We keep a record of the eggs from 

 year to year. In other words, we rate each dealer as to the percentage of 

 hatch. Each foreman reports the results from the loss of eggs received from 

 half a dozen different dealers, for illustration, and then we know that if all 

 of the foremen report a bad hatch of eggs from any one dealer, the fault 

 must be with the barren fish, or with the method of handling at the original 

 source and we drop that dealer from our lists. We try to deal with men whose 

 eggs generally rank well at all of the hatcheries. We may find that there is a 

 poor percentage of hatch at one hatchery, while the majority of the hatch- 

 eries give a good percentage. We then presume there was some fault in 

 transportation, or in water at the hatchery, or in methods of hatching, and 

 we give that dealer an opportunity to try again. If we who buy eggs through- 

 out the country of almost all the same dealers, could compare notes, we 

 might get some material which would be the basis for further investigations 

 for the food which is fed the fish at the source of supply. 



In regard to water supply, I want to say here what I say every chance 

 I get, that you, who have the locating of hatcheries under your control, 

 should test the water for eggs and young fish for at least a year before you 

 invest the people's money in those hatcheries, and that if any political 

 influence to locate a hatchery is brought to bear, you withhold your action 

 until you have made that test, because you can save the people a great deal 

 of money. You all know it. I do not have to go into detail either for the 

 Bureau of Fisheries or any of the States. 



Mr. Nevin, of Wisconsin: I wish to say, gentlemen, that in one of our 

 hatcheries I have just the condition that Mr. Titcomb spoke of. The fish 

 are most prolific, and the eggs which were hatched there are sent to our 

 other hatcheries, where they do excellently, but at home in their own water 

 they do nothing. We cannot keep them until they are six weeks old. 



Studies on the Nutrition of Fish: Experiments on Brook Trout. 



BY DR. SERGIUS MORGULIS. 



(Read by Prof. Henry B. Ward). 



This paper was awarded first place in the class of papers dealing 

 with biological investigation of fish and fisheries problems. It 

 has already" been published (Transactions, Dec, 1918, p. 34). 



Discussion. 

 The Secretary, Mr. Titcomb: This paper represents a tremendous 

 amount of work, and it gives you just an inkling of what it means to come 



