[15] 



FISH CULTURE IN CENTRAL EUROPE. 



553 



As reserve or supernumerary apparatus I have seeu these troughs 

 employed at Selzenhof, Zurich, and Seewiese. 



Bg,5. 



Tig. 6, 



In the last-mentioned establishment I have seen it with such singu- 

 lar modifications that I deem it proper to give an idea of the same. 



One of these models represents a small box with a rectangular base 

 (see Figs. 5 and C) which serves to receive the water directly from the dis- 

 tributing cock. Along a line in the middle of the longer side of this 

 box there is joined to it a receptacle of oval shape, in which the box 

 with the eggs is placed. A small pipe placed below the upper edge of 

 the box pours the water into a second pipe which is lower, broader, and 

 longer, which takes the water which cannot all come out through the 

 smaller pipe and which also* flows between the two partitions, the in- 

 side and lower of which supports the frame- for the eggs, while the 

 upper limits the external surface of the apparatus. The capacity of 

 this box is 6,000 trout eggs, the exact quantity which a California trough 

 of the normal type and dimensions can hold. 



I do not consider it necessary to describe another modified type of 

 the California box, capable of holding 7,000 trout eggs, lower than the 



