352 BIOLOGY FOR BEGINNERS 



FOODS PRIMARILY OP ANIMAL ORIGIN Continued 



than is required and second, they have an idea that the most 

 expensive foods are the most nutritious. 



These are serious mistakes, overtaxing both the digestive system 

 and the pocket book, and no subject of our study is more important 

 than the one giving us a clear idea of food values and selection. 



Right and Wrong Diets. We are all too apt to let our artificial 

 " tastes " and the demands of fashionable customs over-rule our 



