74 BIOLOGICAL PROBLEMS 



must confess, drinks it very sweet. I was surprised 

 to find that his coffee had the same food value as 

 ordinary beer. The sugar added gave as much 

 energy as the alcohol of the beer. Where milk is 

 added in addition to sugar, as is still the general 

 custom, coffee and tea may have quite a high food 

 value greater than that of the strongest ales. 



Cocoa differs from tea and coffee in containing a 

 considerable amount of fat, protein, and carbohydrate. 

 A cup of cocoa made with water may be estimated to 

 have about half the food value of an equal amount of 

 beer. If made with milk the value of cocoa is multi- 

 plied about four times. 



Most of the other beverages hardly have any value 

 at all as foods. The sweet effervescent drinks may 

 contain sugar in trifling amounts but very often con- 

 tain only saccharine, which is valueless as food. 



A. R. C. 



