Wind and Weather 



137 



of the air as a cyclone. Although the size of the whirl is small, 

 the inflow of the wind is terrific, and often great damage to 

 buildings and other property occurs in its course. A tornado 

 seldom extends over forty miles in the length of its course, and 

 its width rarely exceeds a quarter of a mile. It usually travels 

 in a northeasterly direction. 



Brown Brothers. 



A TORNADO. WIND IN ITS MOST VIOLENT FORM 

 Suggest a reason why the men do not seek shelter. 



When a tornado develops in the ocean, or other body of 

 water, a funnel-shaped water column, called a waterspout, is 

 sometimes formed. This appears to connect the clouds above 

 with the water below. It is believed that most of the water which 

 forms the spout is condensed from the water vapor of the air 

 itself. 



