GOVERNMENTAL REGULATION OF FOODS 349 



Salad with mayonnaise ... 1 ding with cream 2} 20 



2 slices bread and butter . 3 28 Bread and butter 2 18 



Milk custard 1 26 Demitasse black cofifee ... 



Small piece sponge cake . . 1 7 Total l7l50 cal7l24 



Total 1,350 cal. 261 Grand total 2,650 cal. 



Grand total 3,000 cal. with about 12 per cent, protein. 



with 13 per cent, protein. 



It will be clear from what has been said above that the require- 

 ments of the body for muscular labor in winter will depend on whether 

 a person works indoors or out. Lumbermen who work in the north 

 woods in winter probably require more food than any other class of 

 laborers. At the opposite extreme, so far as external conditions are 

 concerned, stand the men who work in factories, beside furnaces, etc. 

 Their muscular work may be just as heavy as that of the lumberman, 

 but their bodies are kept warm by artificial heat. The problem for 

 them, as for ordinary laborers outdoors in hot weather, is rather that 

 of removing the extra heat of muscular work. 



Between these two extremes, naturally, are people who are sub- 

 jected to conditions of all degrees of seve^it3^ It is impossible to 

 prescribe a day's dietary which will fit all of them. We select a teamster 

 and a foundryman of average weight. The former we suppose not only 

 does the heavy muscular work of lifting boxes and cases, but is exposed 

 to cold winds and rains. The latter does heavy work but is kept warm 

 at his task. 



A person who follows his natural craving will find himself eating 

 more meat, especially more fat meat, in winter than in summer. This 

 is not merely because fat meat contains more energy for the same 

 weight than starchy foods, but because foods rich in protein and fat 

 stimulate the processes of combustion by which heat is produced. For 

 example, a day's diet consisting of nothing but lean meat would increase 

 the heat production by about 30 per cent. The same diet consisting 

 exclusively of starchy foods would increase it only about 5 per cent. 

 This is the reason why laborers in the open crave meats more than do 

 those who work indoors. 



TABLE II 



Sample Diets for a Teamstee and a Fouxdey "Woeker 



Pull Dau^y Supply op Energy for a Full Daily Supply of Energy for a 



Teamster op Average Weight Foundry Worker of Av. Weight 



Breakfast Breakfast 



O 4» 



3 wheat cakes 3 45 Large serving oatmeal ... 1 18 



with maple syrup 1 Cream and sugar 1 25 



