8 



Were quite inactive, owing to the fact that young 

 trout retain a large umbilical sac, which sustains 

 them some sixty days without food, while the white 

 fish have a very small appendage, which is absorbed 

 in about fifteen days. 



These escaped from my charge through the 

 meshes of No. i 2 wire cloth, down the stream, and 

 I had no opportunity to experiment further with 

 them that year. On the following November, 1870, 

 Mr. George Clark, who is an intelligent and ex- 

 perienced fisherman, kindly aided me in securing the 

 same number of the ova from the Detroit River that 

 I took the previous year. 



I placed these in the same water as before, and 

 succeeded in hatching a much larger proportion, 

 and from my previous experience I selected No. 40 

 copper wire cloth, which proved effective in retainino- 

 them in their troughs. 



This gave me an opportunity to use all the skill 

 possible to keep them till spring. 

 % Soon after these were hatched, James W. Milner, 

 U. S. Deputy Fish Commissioner, visited my 

 hatchery, and we decided that he should take home 

 with him 100 of these swift-motioned fellows, and 

 the balance, being some 3,000, were to remain in 

 their hatching boxes. 



Our plan was to learn what artificial food would 

 best sustain them till spring. 



As Mr. Green had not yet learned what they 

 required at this infantile period, all our efforts failed, 

 as all died within four weeks, notwithstanding our 

 constant watchfulness over them. This result quite 



