22O 



GENERAL SCIENCE 



where one can work to the next meal time without becoming 

 exhausted in strength or ravenous in appetite. When people 

 are well any lack of appetite should generally mean absence 

 of bodily need for food. As a rule it is better to stop eating, 

 especially when the meal has been at all hurried, before 

 being quite fully satisfied in hunger. 



FIG. 71. Comparative cost of the same amount of protein from different food- 

 stuffs 1 . (After Weed.) 



Poor cooking, improper combinations of foodstuffs, and 

 use of substances unfit for food because indigestible, are 

 all responsible for much ill- health. It is very likely, however, 

 that even more human wretchedness and sacrifice of lives 

 comes from over-eating. The very poor often suffer greatly 



1 The prices of foodstuffs both in general and in relation to one 

 another have been wholly changed as result of the world war. This, 

 however, does not impair the worth of this exhibit of relative values 

 under normal conditions. 



