32 American Fisheries Society 



time feeding began until the salmon averaged two inches in length 

 was about 20%. Since that time the amount of liver and kidney- 

 has been reduced to one ration a week, the other daily rations 

 consisting of meat meal alone. The results with this food are 

 shown in Series J, of the table. 



CONCLUSION. 



These experiments must not be considered as finally disposing 

 of questions concerning the use of these foods for trout. They are 

 rather preliminary to a much larger series contemplated. There- 

 fore, it is perhaps wise not to draw too narrow conclusions at this 

 time. However, it seems not unreasonable to believe that the 

 cost of rearing brook trout may be materially lowered by the 

 partial substitution, at least, of some of the dried meals men- 

 tioned, for certain of the high priced fresh meats now in use. 



ACKNOWLEDGMENTS. 



I take this occasion to express my personal thanks to the 

 United States Bureau of Fisheries, the New York State Conserva- 

 tion Commission and The Plymouth Rock Trout Company for 

 eggs and young trout furnished for this work; to Darling and 

 Company, Chicago, for liberal samples of meat meal; to The 

 Flavell Company, New Jersey, for the fish meal; to the Fisher 

 Shrimp Company, New Orleans, for a supply of shrimp bran; and 

 to The Oil Products Company, for various brands of peanut oil 

 meal. I am likewise indebted to certain of my students for 

 assisting in the work and more especially to Messrs. D. S. Purdy 

 and T. C. Chamberlain, who secured some of the data here 

 presented. 



