646 TRANSACTIONS OF THE AMERICAN INSTITUTE. 



Name of Food. Weight in oz. 



Ground rice 3.6 



Lump sugar 3.9 



Grape sugar ._ 4. 



Hard-boiled egg _ 5.8 



Bread _ 6-4 



Lean ham 7.9 



Mackerel 8.3 



Lean beef „ 9.3 



Lean veal 11.4 



Potatoes 13.4 



Apples 20.7 



Milk._ _ ..,21.2 



White of egg.. 23.1 



Carrots 25.6 



Cabbage 31.6 



It should be borne in every mind that the kind and quality of 



food required for repairing and enlarging the human body does 



not enter into this calculation. 



Force — Value of Food. 

 The following table contains most of the determinations of 

 Professor Frankland on the weight and cost of various articles of 

 food required to be oxydized in the body, in order to raise one 

 hundred and forty pounds to the hight of 10,000 feet ; the exter- 

 nal work being equal to one-fifth of the actual energy. They are 

 here arranged to show the relative force-valve. The cost is given 

 at London prices. The relative cheapness in any other locality 

 will be easily estimated by substituting its market prices for those 

 of London. It is to be regretted that no experiments were made 

 with mutton and mutton-fat : 



Name of food. Weight in lb. Price per lb. Cost. 



required. s. d. s. d. 



Codliveroil ..0.553 3 6 111^ 



Beef-fat 0.555 10 5^ 



Butter 0.693 16 10^ 



Cocoa-nibs ....0.735 16 10^ 



Cheshire cheese 1.156 10 11^ 



Oatmeal 1.. L281 2| 3^ 



Arrowroot 1.287 10 1 3i 



Flour 1.311 2| 3| 



Pea-meal 1.335 3^ 4^ 



Ground rice 1.341 4 5^ 



Isinglass 1.377 16 22 O-i 



Lump sugar 1.505 6 13 



Grape sugar 1.537 3^ 5^ 



Hard-boiled egg.., 2.209 6| 1 2h 



