62 REPORT ON ARTIFICIAL FISH-CULTURE. 



self-accomplished so to speak; and from the sin- 

 gle circumstance of a happy distribution of the 

 different waters which run from one side to the 

 other. 



When the spawn have arrived at the growth 

 of young fish suitable for stocking streams, the 

 Rhone and the Rhine canal which runs between 

 the two long lines of ponds wheye these fish are 

 kept in reserve, will itself be the natural means 

 to conduct them into all the waters of France 

 by means of their intercommunications. To attain 

 to this object, a jointed raft should be made of 

 pieces of wood transversely placed, and connected 

 by iron rings, and in the interstices of this raft 

 should be fastened casks sufficient to hold the en- 

 tire supply of fish. These casks should be pro- 

 vided with gratings, so as to be permeable, and 

 contain water plants so that the young fish are 

 not injuriously crowded. 



The convoy so disposed should stop succes- 

 sively before each pond, and right and left the 

 workmen attached to the ordinary service of the 

 canal will empty into it the fish drawn from 

 these drains ; then, the cargo completed, the raft 

 will be set in motion, and the casks, with their 

 bottoms knocked out from time to time, will sow 

 the fish as a plow would sow seed, if capable 

 of doing thus as fast as it made furrows. 



