238 



FIRST YEAR SCIENCE 



to the physical development, endurance and mental 

 ability of a large number of college men has shown con- 

 clusively that those who have not used tobacco, as a rule, 

 have better physiques, are better students and can stand 

 more physical exercise than those who have used it. In the 

 competition for athletic teams it is found that only about 

 half as many of those who have used tobacco make good, 

 as of those who have not used it. 



COFFEE PLANT. 

 Showing the clusters of beans from which coffee is produced. 



111. Preparation of Foods. When foods are appetizing, 

 look good, smell good and taste good, both the saliva and 

 the gastric juice are secreted in larger quantities, so that 

 this sort of food, wnen taken into the system, is more read- 

 ily digested than food which is not attractive. One of the 

 reasons for cooking food is to render it appetizing, and 

 this should never be lost sight of by the cook. Cooking 

 also softens and loosens the fibers of meats and causes the 



