FIG. 4 IMPRESSES TWO VALUABLE FACTS: 



(1.) That milk alone is an insufficient food after early infancy; and that it is 

 a useful, though not cheap, source of protein and fat at all ages, when combined 

 with other nutrients. Skim-milk, on the contrary, is the cheapest source of animal 

 food we have. 



(2.) That in considering the food-value of an egg, it must be borne in mind 

 that about one-third of this value is protein and two-thirds fat ; and fat of a most 

 digestible form. 



FIG. 3 ILLUSTRATES THE CONCENTRATION OF PROTEIN AND FAT IN 



CHEESE, 



about three-fourths of its food- value being fat. Thus cheese is a very choap 

 food when properly prepared. This diagram demonstrates also the relatively 



BODY-BUILDING and FLESH-FORMING. 

 SK Mater 



HEAT and ENERGY -GIVING- 



O- ^a' 

 1* St-arcrit* % Sugar* (c ai >h*j*,.r*j 



Fig. 4. Reproduced by kind permission of E. J. Arnold, Leeds, 'England. 



high food-value of a herring. It is a perfectly sound instinct which leads the 

 very poor to buy a " kipper " as a relish to their dry bread, but it is an unsound 

 custom which serves herring or salmon (another fat fish) before a meat course 

 at dinner, especially if the meat be itself rich in fat, say beef or pork. If poultry 

 or game follow such fish this objection is removed, for, in their case, there is 

 usually a deficiency of fat. For the same reason 



THESE FISH ARE UNSUITED FOR THE DIET OF YOUNG CHILDREN. 



Dried and smoked fish are some of the cheapest sources of protein for their 

 elders, because they sell for about the same price per pound as fresh fish, but 

 contain less than half the amount of water. 



IS 



