126 Our Surroundings 



Sections of land crossed by winds that have already lost most 

 of their moisture are certain to have a desert-like appearance. 

 There is such a region immediately east of the Rocky Moun- 

 tains. 



Among the many maps and charts published by the United 

 States Weather Bureau at Washington, and obtainable at slight 

 cost, are several relating to rainfall, to humidity, and to tempera- 

 ture. The daily weather maps give information on these points 



United States Weather Bureau, 



TUFTED CIRRUS CLOUDS 



The forerunners of a storm. 



over periods of twenty-four hours. There is also a special map 

 showing by differently shaded areas the average annual rainfall 

 in all parts of the United States. Other charts deal with other 

 climatic conditions. By studying these maps and charts you can 

 obtain interesting information concerning climatic conditions in 

 your own locality and can learn how these conditions compare 

 with those in other sections. 



