MILLS AND FOOD MACHINERY 2 7 



full use of the bone refuse which is constantly accumu- 

 lating. A first-class mill will work bone and flesh of 

 dead animals and the waste from the table or market 

 into pieces that can be swallowed by the fowls. 



By grinding and feeding the bones their full value 

 is secured, as they furnish a first-class egg food, while 

 most of the fertilizing value is secured in the manure. 

 Manure from animal food is nearly as rich as guano. 



Several types of the hand bone mill are shown in 

 Figure 33. The two upper mills are for dry bones 



FIG 34: MOUNTED BONE MILLS 



only, and are therefore less useful for general pur- 

 poses. They cost about five dollars each, but some of 

 this type are sold as low as two dollars and a half. 



The two mills at lower part of Figure 33 are for 

 green bones. The first pattern works with a chopping 

 motion. The secc ; d, one of the oldest and most popu- 

 lar styles, has a cutting action. Both are good for their 

 size, but to operate them with heavy bones is tedious 

 work. For a good-sized flock it is best to have a large 



