FOOD 



357 



Experience teaches that 



1. Food must be sufficient in amount. 



2. Diet must contain proper proportion of the nutrients. 



3. Diet must contain vitamines. 



4. Diet must include a considerable variety of foods. 



SUMMARY OF NUTRIENTS 



NOTE. Look up tests for as many of the above as you can. 



NOTE. There are many kinds of proteids as, 



(1) Myosin in meats; (2) legumin in peas and beans; (3) casein in 



