36 THE NEW AKT OF BREEDING FISH. 



plied to all species of fish might become a source of 

 great profit. This claim to his discovery, his work 

 so well establishes, that it seems singular that any 

 one should attempt to deprive him of it. He places 

 it beyond doubt, by the care he takes to show all the 

 cases where his invention will give results theretofore 

 impossible. Thus he demonstrates the possibility of 

 creating at will, mixed breeds, by mixing the spawn 

 and milt of two different species, which could not be 

 done before his discovery ; he shows, too, the pos- 

 sibility of hatching artificially alongside of ponds 

 containing unproductive species, the eggs of these 

 very species, and of stocking these ponds with young 

 fish from these eggs. 



Every part of his research is characterized by 

 such exactitude and practical good sense, that all 

 fundamental questions are resolved ; and this new 

 discovery had hardly appeared in the domain of 

 science when it was transferred to that of industry. 



It was in the kingdom of Hanover, near to Nor- 

 telem, that the first trials were made. They gave 

 such important results that the fish so obtained be- 

 came an object of considerable commerce, and Eng- 

 land wishing to reward such service, granted a pen- 

 sion to the party who successfully commenced it * 



Thus tiien, not only does the discovery of artifi- 

 cial fecundation belong to the author of the memoir 

 published by the Count de Goldstein, but to him too 



* SoiHes liehetiennes, etc. Amsterdam, 1'?'71, p. 169. 



