THE WINDS OF Till': yOUTHERN HE3IISPHEUE. 437 



arrested in their course, or tiuned Lack in their circuits, as are 

 tliose of the north. Consequently, moreover, we should not, 

 either in the trades or the counter-trades of the southern hemi- 

 sphere, look for as many calms as in those of the nortliein 

 systems. 



819. Fads estaUkhed. — AVherefore, holding to this corollary, 

 we may consider the following as established facts in the meteor- 

 ology of the sea : That the S.E. trade-Avinds are stronger than the 

 .IV.E. ; that the K.W. passage-winds — the counter-trades of the 

 south — are stronger and less liable to interruption in their cir- 

 cuits than the S.AV., the counter-trades of the north ; that the 

 atmospherical circulation is more regular and brisk in the south- 

 ern than it is in the noithein hemisphere ; and, to repeat : since 

 the wind moves in its circuit more briskly through the southern 

 than it does through the northern hemisphere, it consequently 

 has less time to tarr}^ or dally by the way in the south than in 

 the north; hence the corollary just stated. But observations, 

 also, as well as mathematically-drawn inferences, show that calms 

 are much less prevalent in the southern hemisphere. Eor this 

 inference observations are ample ; they are grouped together by 

 thousands and tens of thousands, both on the Pilot and the Storm 

 and luiin Charts. These charts have not yet been completed 

 for all parts of the ocean, but as far as they have been constructed 

 the facts they utter are iii perfect agreement with the terms of 

 this corollary. 



820. Atmospherical circulation more active in the southern than in 

 the northern hemisphere. — These premises being admitted, we may 

 ascend another round on this ladder, and argue that, since the 

 atmosphere moves more briskly and in more constant streams 

 through its general channels of circulation in the southern than 

 it does through them in the northern hemisphere ; and that, 

 since it is not arrested in its courses by calms as often in the 

 former as it is in the latter, neither should it be turned back by 

 the way, so as to blow in gales from the direction opposite to that 

 in which the general circulation carries it. The atmosphere, in 

 its movements along its regular channels of circulation, may be 

 likened, that in the southern hemisphere to a fast railway train ; 

 that of the northern to a slow\ The slow^ train may, when 

 " steam is up," run as fast as the fast train, but it is not obliged 

 to get through so quick ; therefore it may dally by the wa}', stop, 

 run back, and still be through in time. jN'ot so the fast ; it has not 



