TKOUT PONDS 109 



building over the stream of waste water at the 

 lower end of the property and setting up an 

 undershot waterwheel. The same building 

 could also be utilised as an icehouse and a re- 

 frigerator for meat. 



In connection with the meat-grinder there 

 should be an assortment of perforated tins for 

 pressing liver through them to make a paste 

 of requisite thinness for advanced fry. A 

 liver-pulverising block is a part of this impor- 

 tant contrivance. The block is made of wood, 

 well sand-papered, just large enough to be held 

 comfortably in both hands, and with the thick 

 end bevelled so as easily to catch and crush 

 liver through the perforated tin. 



Pudding pans of tin or agate ware of dif- 

 ferent sizes, for holding eggs and liquid liver- 

 paste for feeding the fry, must always be kept 

 on hand. Also a soft-rubber bulb attached to 

 a hard-rubber tube, for picking out dead eggs, 

 and for feeding fry while in the troughs. 



Some fish-culturists use wooden pickers ex- 

 clusively for egg work, but in Pennsylvania the 

 superintendents of the state hatcheries aban- 

 doned them years ago for a rubber bulb, which 



