-l PERFECT FOOD 47 
rating to the nervous system when ‘run down’ through fatigue or 
worry. 
‘*Chocolate has been employed for its staying powers and its nu- 
tritive properties with considerable success in army maneuvers and in 
similar operations which make a vigorous demand upon the nervous, 
muscular, and mental energies, and on that account is invariably in- 
cluded among the provisions of expeditions. A chocolate ration used 
inthe Austrian army was stated to equal five times its weight in beef. 
It has been calculated that a pint of milk and four ounces of chocolate 
yield about 800 calories, comprising a fair meal for theinvalid. This 
establishes the nutritive and energy value of milk chocolate. Choco- 
late can only do harm, in common with all good foods, when eaten to 
excess.’’ 
