142 



ELEMENTS OF GENERAL SCIENCE 



use as illustration smaller bodies of water than the ocean, 

 for instance, the lakes. 



After we have secured some definite information regarding 

 the influence of a lake upon the surrounding communities, 

 we should be able to apply this information to the explana- 

 tion of the effect which bodies of water have upon the lives 



70 



COLUMBUS 

 CLEVELAND 



FIG. 72. Temperatures during a hot wave 



The diagram shows the relative temperatures of Concordia (Kansas), Columbus 



(Ohio), and Cleveland (Ohio) from July 13 to July 19, 1913. Cleveland is on the 



shore of Lake Erie 



and industries of men in various parts of the world. By 

 studying figure 72 it will be seen that on July 14, 1913, 

 Cleveland, Ohio, had a temperature of 70 F., while Con- 

 cordia, Kansas, at a higher elevation, had a temperature of 

 110 F. The figure shows other interesting facts. During 

 periods of warm weather the temperature at lakeside places 

 is usually lower than at inland points in the surrounding 

 country. On July 17, 1913, the United States Weather 

 Bureau reported the highest temperatures for the day at 

 Milwaukee, Chicago, Detroit, and Cleveland to be from 74 

 to 78 F., while at the same time the adjacent parts of the 



