114 FISH CULTURE 



and No. 1 fingerlings, but the latter not very 

 long, and sucli a number would mean unremit- 

 ting care, and attention from early morning un- 

 til late at night. Such a house will hold 60 

 double or 120 single troughs if set in three tiers, 

 and will require only 120 gallons of water. To 

 build a house of this type there must be a fall 

 from the spring or stream sufficient to permit 

 of there being about five feet from the supply- 

 trough to the floor of the house, certainly not 

 less than four feet. It can be built of frame, 

 with stone, concrete, or building-tile founda- 

 tion, and completely equipped, at a cost of from 

 $1,600 to $2,400, depending upon the price of 

 materials. 



A gambrel roof will be found cheaper than a 

 double-pitch roof, and probably present a better ap- 

 pearance. The side walls should be not less than eight 

 feet from the top of the foundation walls to the eaves, 

 but a more imposing appearance will be given if the 

 walls are ten or twelve feet to the eaves. There 

 should be no inside pillars or posts, as they would be 

 in the way of the workmen, consequently the roof 

 must be supported by trusses. Five trusses will be 

 sufficient for a house 100 feet long. The simplest and 

 cheapest form is the single railroad truss. The hot- 



