TROUT-BREEDING IN WINTER 



183 



receptacle is put in use ; and if sufficient care be 

 exercised in this, there is but little fear of the 

 lead proving deleterious to the fish. A slanting 

 section of the pipe may be cut off by means of a 

 good sharp knife or saw ; and trough, spout, and 

 all is then furnished with sufficient complete- 

 ness to rear the most delicate of all fishes 

 (Fig. 81). 



Fig. 81. — Trough . 



In large fish-breeding establishments a series of 

 troughs, either of slate, glass, earthenware, or, as 

 I have just described, of wood, is usually erected, 

 and the water passes, by means of the spouts, from 

 end to end of each. This series may, and often 



