Clinton's letter on the fishes of new-york. 501 



to the self-same spot to deposite its spawn. This has been ascertained 

 by the experiments of M. De la Lande, who, fastening a small ring of 

 copper to the tails of some individuals, and then setting them at liberty, 

 found that some of them made their appearance in the same place, for 

 three succeeding seasons." If this be the case, you will at once perceive 

 why they do not visit the Niagara, a river where they have never been 

 propagated. 



