A HARD-WORKING DIET. 37 
fishermen believe them to be. For what the British 
workman determines to do, by CO-OPERATION he 
Truck loads might be had direct. 
hard work, 
before a man is able to do this he must keep himself 
can do. 
As regards it must be remembered 
alive, and only one-fifth of the energy he obtains from 
his food can be used for what is called “ external 
work.” The work of mere living is hard work—the 
work involved in the beat of the heart and the action 
of the lungs alone, which goes on during sleep as well 
as by day, and the maintenance of heat. 
Here is a table by Professor Frankland, showing 
alternative foods of a person even lying quite idle. 
Only one-fifth 
of energy 
obtained from 
food is avail- 
able for ex- 
ternal work. 
WEIGHT OF VARIOUS ARTICLES OF FOOD REQUIRED TO SUSTAIN Requirements 
RESPIRATION AND CIRCULATION 
AVERAGE MAN DURING TWENTY-FOUR Hours. 
Name of Food. est Name of Food. re 
Cheshire Cheese . 3°o: || Whiting”. . 16°8 
Potatoes . 13°4 || White of Egg 2305 
Apples 20°7 || Hard-boiled Egg 5°8 
Oatmeal . 3:4 || Gelatin 3°6 
Flour . 3°5 || Milk 2ilee 
Reameal . —. 3°5 | Carrots 25°6 
Ground Rice . 3°6 || Cabbage . 31°8 
Arrowroot 3°4 || Cocoa Nibs 1G 
Bread . Oras | Butters oe i OCS 
Lean Beef 9°3 || Cod Liver Oil Tals 
wean Veal). 11°4 || Lump Sugar . : 376 
Lean Ham (boiled) . 7°9 || Commercial Grape Sugar 4°0 
Mackerel . : 8°3 
Then, besides the chemical aspects of the question, 
there is that very practical one of relative cost— 
a subject to which Dr. Edward Smith paid much 
attention, and on which he drew up suggestive Tables, 
which he included in the Reports to the Privy 
Council, made under such circumstances as mentioned 
in the next few pages which seemed to fully justify 
IN THE Bopy oF AN for ‘internal 
work.” 
Consideration 
of relative 
cost. 
