40 REPORT ON ARTIFICIAL FISH-CULTURE. 



cious observer addressed to an ancestor of the 

 celebrated Fourcroy, a most interesting memoir 

 upon artificial fecundation of trouts' eggs, and 

 upon the application to stocking rivers, of which 

 the discovery was susceptible. 



An extract from Goldstein's work, was inserted 

 in a work called Soirees Helvetiennes, and some 

 years later, in 1770, Duhamel du Monceau gave 

 a translation of it in the third volume of his 

 Traite generel des Peches, published under the sanc- 

 tion of the Academy of Sciences. 



About the same period, a German naturalist, 

 Jacobi, published at Hamburg an equally interesting 

 letter upon the art of bringing up salmon and 

 trout, and on the production of these fish by 

 means of artificial fecundation. At a later date 

 analagous experiments were made in Scotland by 

 Dr. Knox, Mr. Shaw and Mr. Andrew Young. In 

 1835, Signor Rusconi, so well known among natu- 

 ralists by his work on the embryology of sala- 

 manders, published in the seventy-ninth volume 

 of the Bibliotheca Italiana, new observations on 

 the development of fish, and gives equally instruc- 

 tive details in artificial fecundation of the eggs 

 of the tench and the ablette. At my suggestion, 

 the translation of this memoir was inserted in 

 the Annaks des Sciences Nalurelles pour 1836. 



I would add, too, that it was by recourse to 



