14 



the young - fish thus become dependent upon such 

 food as chance may furnish them, I wish to ask who 

 can expect a single one of the fish hatched under 

 such circumstances to survive in our latitude during 

 the winter ? 



I believe it is just as necessary to the existence 

 of this fish, as of the white fish to be hatched at that 

 time of year, when the temperature of the water is 

 such as to admit of the development of animalcule 

 the only natural food of the young fish after the ab- 

 sorption of the umbilical sac. 



Take another case — the salmon trout for in- 

 stance, which is a native of our state, and let us ex- 

 amine their natures and necessities. 



About Oct. i st, 1874, I visited Mackinaw for the 

 purpose of procuring some of the ova of this fish 

 for breeding purposes, and I suceeded in securing 

 some 300,000. 



I arrived at Northville with them about the 25th 

 of the same month, the eggs being in good condition 

 save a few thousand that were injured in transpor- 

 tation in the extreme warm weather. The eggs 

 were placed in pure spring water at an average 

 temperature of 45 . It is now Jan. 20th, and they 

 are all hatched out, and when I look upon the 

 beautiful lively little fellows, in full health and vigor, 

 each with its exact quota which nature has fur- 

 nished them appended to their stomaches, only 

 sufficient, however, to sustain them for some fifty or 

 sixty days, it makes me feel sad when I think of the 

 destruction there must certainly be from famine if 



