348 



THE POPULAR SCIENCE MONTHLY 



If the person's work requires him to walk about all day, instead of 

 sitting still and using his arms, he, of course, does the work of carry- 

 ing his body, to say nothing of the other things he may carry, and the 

 allowance must be three or four times as great as in the case of type- 

 writing. A soldier on the march, walking less than three miles an hour, 

 has been found to use 160 calories per hour for the muscular work 

 alone. Most occupations which involve walking are less exacting because 

 there are frequent rest periods. So, if we allow 75 calories per hour, it 

 will probably supply the extra energy requirement over that of com- 

 plete muscular rest, for, say, a fairly active salesman. This total intake 

 in three meals, if he is of average weight, would be some 400 calories 

 (four standard portions) more than that of the office worker. Two 

 sample diets constructed so as to contain the twenty-four-hour require- 

 ments for the office worker and the salesman, respectively, are given 

 below : 



TABLE I 



Full Daily Supply of Energy for a Full Daily Supply of Exergy for ax 



Salesman OF Av. Weight (154 lbs.) Office Worker of A"\'erage Weight 



Breakfast Breakfast 



1 small orange i 



2 shredded wheat biscuits . 2 

 Vienna roll and butter ... 2 



1 egg, soft, fried or 

 poached 1 



2 thin slices bacon 1 



Coffee, cream and sugar . . i 



c « 



3 1 small orange ^ 



26 Large serving of oatmeal . 1 



12 Cream and sugar 1 



2 slices dry toast 2 



32 Ordinary serving butter . . 1 



6 2 eggs, soft boiled 2 



2.5 Coffee, cream and sugar . . i 



z. 



3 



IS 



2.5 

 2S 



0.5 

 64 



2.5 



Total 700 cal. 81.5 



Total 800 cal. 118.5 



Luncheon 

 Ordinary serving beefstew 2 24 



Tomato and beet salad 



with dressing li 15 



2 slices bread and butter . 3 28 



Apple tapioca pudding, 



large serving 2 2 



Cocoa, cream and sugar . . 1 4 



Luncheon 

 2 small tomato and lettuce 



sandwiches 2 28 



1 large glass whole milk . . 2 38 



1 ordinary piece apple pie 3 15 



Total 700 cal. 81 



Total 950 cal. 73 



Dt 71 Tier 

 Cream of celery soup . , 

 Ordinary serving roast 



lamb 



2 baked potatoes 



Side dish green peas 



120 

 22 

 50 



Dinner 



Plate of bouillon 



Small serving rib roast . . 2 50 



2 small potatoes with 



butter 3 20 



Ordinary serving rice pud- 



