Proceedings Forty-eighth Annual Meeting 79 



temperature ranged from 55 to 65 . The experiments were made at all 

 times of the year, but most of them were made during the summer months. 

 Ordinary pure spring water was used, without filtration, as it came directly 

 from a spring. 



Mr. Jas. Nevin, of Wisconsin: We have found horse meat much superior 

 to any other for our brook trout. At one hatchery we are using sheep liver 

 and find it very good food, provided that Red Dog Flour is boiled and mixed 

 with it. But I find that the greatest success in fish culture is in connection 

 with the water. In some of our hatcheries we have success with some kinds 

 of fishes and not with others. We have one hatchery where we will run 

 about sixty-five per cent of losses with pike-perch eggs, while in another we 

 hatch 90% to 95% of them. 



Mr. John W. Titcomb, of New York: Dr. Embody's paper is a most 

 valuable and timely contribution, because the cost of food in these days is a 

 very serious one. In addition to the cost value of the fish foods, Dr. 

 Embody's experiments have in mind the effect upon the quality of the 

 flesh, which is very important, but in the production of fingerlings for dis- 

 tribution the food that will produce results at minimum cost, taking into 

 consideration both labor and material, is the one which will be most gen- 

 erally adopted. Assuming that the fish which are planted as fingerlings 

 will thereafter depend entirely upon natural food, the quality of the flesh 

 will be adjusted by the time the fish have grown to edible size. 



Since knowledge of negative results of experiments may prevent waste of 

 energy through repetition, I will briefly review some experiments at the 

 State Fish Hatchery at Caledonia, New York. 



The experiments were under the immediate supervision of Mr. Thomas 

 Chamberlain, a student of Dr. Embody, operating under my direction. 

 One of the objects of the experiments was to apply in a practical manner, in 

 regulation rearing ponds, the knowledge obtained from the experiments 

 in the small and limited number of rearing boxes available at Cornell Uni- 

 versity and to supplement them with other experiments suggested by hatch- 

 ing customs and conditions. 



The experiments were terminated rather abruptly when Mr. Chamber- 

 lain was drafted into the army, where he is now patriotically serving his 

 country "over there." 



For some of the experiments concrete rearing pools 3 feet by 36 feet to 

 the number of ten were utilized. For other experiments, hatching troughs 

 14 inches by 12 feet were used. The species fed under observation consisted 

 of brook trout, lake trout and rainbow trout and the following tables give 

 the results. (The tables are a condensation of a portion of Mr. Titcomb's 

 remarks). 



