8 fish culture: 



are two sheds, each sixty metres long by nine wide j? 

 the other side of the square being composed of two 

 guard-houses. In the centre is a court, with shrubs 

 and two small basins or reservoirs. In the principal 

 building, on the ground floor, is a pavilion, in which 

 experiments which require particular care are con- 

 ducted : over this are the offices. The grounds are 

 laid out and interspersed with fish-ponds, ornamental 

 plants, flowers, &c. These ponds are fed partly by 

 the Ehine water, and partly by the little rivulet of 

 L'Augraben, which traverses the grounds. The spring 

 water is conducted to the buildings in which all the 

 operations are carried on by pipes entering the 

 building in three brick trenches, this water is then 

 raised to the proper height by means of pumps 

 worked by turbines, these turbines being driven by 

 the water of the Ehine. In case of any failure of 

 the supply of spring water, the water of the Ehine, 

 which has been previously carefully filtered, can be 

 turned on to the apparatus. Eows of cisterns, about 

 a yard in height, extend through the whole length 

 of the buildings. These cisterns are each about ten 

 or twelve yards long, a yard in width, and eight 

 inches deep. The ova is placed upon a glass grille, a 

 species of gridiron composed of hollow glass bars or 

 1 A metre equals about 39 1 inches. 



