Ordinary Storms. 577 



ing the origin of cyclonic winds and storms, some think- 

 ing that the low areas are primary and that the areas of 

 high pressure result from the overflow of air from one or 

 more of these which overlap; while others maintain that 

 the high areas are primary and that the low areas are sec- 

 ondary. At the present time the former view is able to 

 bring much the stronger evidence to its support, so far as 

 the operation of well established physical principles are 

 concerned, and, with some modifications, seems likely in 

 the end to prevail. 



