HEAT IN THE PRESERVATION OF FOOD PRODUCTS 54! 



At pea canneries several methods of utilizing the vines are in use. They may 

 be converted into silage, either by putting into silos or stacking in large stacks. 

 In some sections the vines are cured for hay. They are also valuable as a fertilizer. 



Corn husks and cobs are also used for silage. Experiments were made by the 

 United States Department of Agriculture in regard to the feasibility of using the 

 refuse from the canning of corn for the production of alcohol. It was found that, on 

 account of the expensive machinery and apparatus required in the manufacture, 

 a small factory could not profitably utilize the corn waste for alcohol. It was 

 shown that where several factories were located within a short radius of each other, 

 by shipping their waste to a central plant, it might be used up to advantage. 



Apple cores, "chops" and peelings are usually either used for vinegar making, or 

 are made up into apple jelly. From one factory visited by the writer, the apple 

 cores and peelings were dried, baled, and shipped to Europe, "to be made up into 

 champagne." 



Peach pits are sometimes sold to nurserymen for seed. Sometimes the pits are 

 cracked and the meats used for almond meats and also oil. In many factories, no 

 use is made of the peach stones. 



In the classes of foods in which the waste is not large, the refuse is hauled 

 away to a dumping ground near the factory, or is taken away by farmers for its 

 manurial value. 



