Y6 



M. DE GALBEKT'S ESTABLISHMENT. 



Iserei a department on the south-east frontier of France. The 

 works, of which the accompanying engraving is a plan, comprise 

 four ponds for the reception of the fish in various stages of 

 gTDwth. The first (1 in the plan) is about 100 metres long by 

 3 m. 50 in breadth, with a mean depth of 1 metre. It is 

 almost divided into two parts, a sheet of water and a stream, 



PISCICULTORAL ESTABLISHMENT AT SUISSE. 



by a peninsula, and the division is completed by a grating which 

 prevents the mixing of the fish contained in each part, and also 

 arrests the ascent or descent of the fry. The sheet of water is 

 supplied from sources of an elevated temperature which diverge 

 into the stream, and thence into pond No.' 2 at N. This basin 

 (2) is 150 metres long, with a mean breadth of 8 metres, and 

 a depth varying from 1 to 2 metres. Besides the waters from 

 the first pond, this basin is supplied from the springs, and from 

 the millstream which rises from a rock situated at a distance of 

 200 metres. This pond contains fish of the second year. A 

 sluice or water-gate (J), placed in the deepest part of the pond, 

 affords the means of turning the water and the fish contained 

 therein into the pond No. 3. Courses of rough stones and weeds 

 line the banks of the pond, and form places of shelter for the 

 fish, besides encouraging the growth of such sheU-fish as shrimps, 



