56 REPORT ON ARTIFICIAL FISH-CULTURE. 



it remained confined to physiological experiment; 

 tut lately it has been practically set forth by the 

 Count de Goldstein, by Boccius, and above all by 

 the two fishermen of Bresse, and sober inquiry 

 and trial have been adopted to attain to the 

 precision of pure method in regard to it. 



I have shown for my part, with the assistance 

 of Messrs. Berthol & Detzem, that not only the 

 eggs of fish brought from very distant waters, 

 preserve all their native powers of conception, 

 but that by means of machinery extremely sim- 

 ple, they can be hatched much more quickly and 

 certainly than as the female ordinarily lays them, 

 so that two sets are obtained in the ordinary 

 time of one. 



This double result, that of carrying without 

 injury eggs to a great distance, and their rapid 

 fecundation, leads to the possibility of restocking 

 all the streams of France in a single season; so 

 that it will cost nothing to the State save the 

 necessary advances to organize an establishment 

 wherein the spawn accumulated from all points 

 where they are easily secured, should be confided 

 to the care of canal keepers. I say it will cost 

 the State nothing, because the advances can be 

 readily more than repaid by a contribution, volun- 

 tarily self-imposed by the proprietors in exchange 

 for the precious gifts made them, whether in the 

 form of eggs or young fish. 



