MILLS AND FOOD MACIIIXERY 



31 



this way may be driven very fast for coarse g'rinding', 

 and is very convenient for preparing special mixtures 

 for poultry or for cooking purposes. A small bone 

 cutter may be operated in the same manner. 



Grit Pounders — To keep poultry in thrift, and 

 furnish material for eggshells, lime is necessary, as we 

 have said. Oyster shells and clam shells are much 

 used. To pound these, a log of wood may be slightly 



FIG 39: GRIT POUNDER 



hollowed at one end, and surrounded with a piece of 

 tin (Figure 39), an opening being left to admit the 

 handle of the pestle, which is like a wooden mallet, the 

 striking end being armed with small bolts, driven into 

 the wood so as to leave the heads exposed. A ring to 

 prevent splitting will be an improvement. 



Another style, good for crockery and glass, is 

 shown in Figure 40. Take a piece of railway iron 

 about two feet long, and make a box without top or 



