102 



FOOD NUTRIENTS 



other foods to supply this vitamin. Vitamin C occurs largely in 

 citrus fruits such as lemons and oranges, and in tomatoes and 



Underwooa ci; (JnatrwoocL 



Sunbaths are valuable for insuring the proper functioning of the body. Irra- 

 diation guarantees an optimum storage of calcium in the body. 



cabbage. During the early days of the great World War, before 

 the United States had entered the fight, a foreign ship entered 

 Hampton Roads with hardly enough healthy sailors to man the 

 vessel. The ship had been transformed into a commerce raider, a 

 gun had been mounted both forward and aft, and the hold was filled 

 with enough canned and concentrated foods to provision the crew 

 of sailors and marines for manv months. But fresh foods were 

 lacking and the crew was repeating the experience of many sailors ; 

 it was suffering from scurvy. Orange juice, tomato juice, milk, 

 raw cabbage, celery, carrots, and water cress, which are known to 

 contain vitamin C, were, at once, included in the diet of the sailors 

 and they soon recovered. 



Many animals suffer from a disease known as rickets, which is 

 an improper formation of bones. This seems to be caused by the 



