130 GENERAL SCIENCE 



until enough food is taken to nourish the body. If too 

 great a variety of food substances are taken during one 

 meal, a part of them will go undigested. The meats 

 and vegetables should be changed from meal to meal, 

 or at least several times a week. A normal appetite is a 

 comparatively sure guide in determining the kind and 

 amount of food that a person should eat. 



87. When and How to Buy. Many families in the 

 cities are suffering because of carelessness in buying 

 foods. Many complaints about the "high cost of living" 

 would be needless if more people would make a careful 

 study of how, when, and what to buy and how to use 

 the foods after they are bought. Foods should be bought 

 when they are in season. "In season" is the time when 

 the greatest amount and the best quality of a particular 

 food are on the market; its price will then be the lowest. 

 Foods which spoil easily should be bought only in such 

 quantities as can be used without waste, while foods 

 that can be stored without loss should be bought in 

 larger quantities and direct from the producer if possible. 

 For example, a man in Pittsburgh bought eggs from a 

 farmer when they were plentiful and preserved them. 

 This man was eating twenty- cent eggs when other people 

 were paying 35 to 40 cents a dozen for them. Potatoes, 

 dried fruits, canned goods, and cereals can be purchased 

 in quantity while they are on the market in abundance. 

 It must not be forgotten that a proper place to store 

 food must be had when it is bought in large amounts. 

 Cash payments will get more food for the money spent 

 than time payments. 



88. Waste in Buying and in Use. --There are some 

 people who think that unless they are paying a high 

 price they are not getting nutritious foods. Often the 



