138 THK NEW ART OF BREEDING FISH. 



M. Coste, member of the Institute, and professor at 

 the College of France, next took the subject up, 

 and supported by the French Government, he has 

 been, and is carrying on in France the artificial 

 propagation of salmon, trout, and other fresh-water 

 fish on a very large scale. We do not know as yet 

 fully the results. All we as yet know is, that the 

 French breeders have produced large numbers of 

 fry, but we do not know how many of them have 

 arrived at maturity — how many have attained mar- 

 ketable value. 



I shall pass over Jacobi's method of artificial 

 spawning, and come to that carried into efiect at 

 the establishment of the Messrs. Ashworth, at Out- 

 erard. It is founded on M. Coste's plan. Mr. Hal- 

 liday reporting on the spawning establishment at 

 Outerard, writes from Galway^ July 4, 1853 — " Eo- 

 bert Eamsbottom, from Clitheroe, was sent over by 

 Messrs. Ashworth. The plan tried was by spawn 

 boxes, prepared, and by an artificial rUl-bed, run- 

 ning parallel, and both were equally successful. On 

 the 14th December, 1852, a small rill at Outerard 

 was selected "for the experiment ; by a rude check 

 thrown across, a foot of water head was raised oven 

 a few square yards, to insure regularity in the sup- 

 ply. From this head, half-foot under surface level, 

 three wooden pipes, two inches squarej by a few feet 

 long, drew oiF respectively to the rill-bed and to the 

 boxes all the water required — the surplus of the 

 supplying rill passing away in its usual course. The 



