TRADE-WINDS. 



91 



one becomes a north-east, the other a south-east 

 wind. These are the north-east and the south- 

 east " trades." They blow regularly sometimes 

 gently, sometimes fiercely all the year round. 

 Between the two is a belt of calms and changeable 



i\ M \ \ ^P 



S.E. Trade-] I'inds. 



\ \ 



\ \ \ \ \ \ \ 



Counter Trade-Winds from N.W. 



~ 



DIAGRAM OP THE TRADE-WINDS. 



breezes, varying from 150 to 500 miles broad 

 according to the time of the year where there are 

 frequent and violent squalls, of very short duration, 

 accompanied with heavy rains. This region is 

 called by seamen the " doldrums," and considerable 



