3o8 POPULAR SCIENCE MONTHLY. 



1854, almost destroyed the fleets of France and England. As a 

 storm had raged several days earlier in France, Vaillant, the French 

 Minister of War, directed that investigations be made to see if the 



Fig. 1. — General Circulation of the Atmosphere. 



two storms were the same, and if the progress of the disturbance 

 could have been foretold. It was demonstrated that the two were in 

 reality one storm, and that its path could have been ascertained and 

 the fleet forewarned in ample time to reach safety. 



