SEA ROUTES, CALM BELTS, AND VARIABLE WINDS. 



345 



other. They are also stronger than the trade-winds of either; 

 these facts hkewise favour the idea of a greater exhaustion of air 

 in the antarctic than in the arctic calm place ; and it is manifest 

 that actual observations also as far as they go, indicate such to he 



the case. In other words, " the brave west winds " of the southern 

 hemisphere have the greatest "barometric descent," and should 

 therefore be, as they are, the strongest of the four winds. 



