W I N 



II. Periodical Windt, or Monsoons. 



Such would probably be the regular course of the trade wiuda suppos- 

 ing- the parts between and near the tropics were open sea. But high 

 lands change or interrupt their regular course. For instance, in the 

 Indian Ocean the trade wind is curiously modified by the lands which 

 surround it on the north, east, and west. There, the southern trade wind 

 blows regularly as it ought to do from the E. and S.E., from 100 S. lati- 

 tude to the tropic ; but in the space from 10 S. latitude to the Equator, 

 N.W. winds blow during our winter (from October to April) ; and S.E. 

 in the other six months, while in the whole space north of the Equator 

 S.W. winds blow during summer, and N.E, during winter. These 

 winds are called monsoons. It was observed above, that the regular 

 trade wind blows in the Indian Ocean from 10 S. latitude to the tropic, 

 but there is an exception to this in all that part of the Indian Ocean 

 which lies between Madagascar and Cape Comorin ; for there, between 

 the months of April and October, the wind blows from the S. W., and in 

 the contrary direction from October to April. But of both the constant 

 and periodical winds it may be observed, that they blow only at sea ; at 

 land the wind is always variable. 



Particulars of the Trade Winds, from Robertson. ( Young's Xaitiral 

 Philosophy.) 



1. For 303 on each side of the Equator, there is almost constantly an 

 easterly wind in the Atlantic and Pacific Oceans : it is called the trade 

 wind : near the Equator it is due east, further off it WOAVS towards the 

 Equator, and is N.E. or S.E. 



2. Beyond 30<> latitude, the wind is more .uncertain. 



3. The monsoons are, perhaps erroneously, deduced from a superior 

 current in a contrary direction. 



4. In the Atlantic, between I0o and 28 N. latitude, about 300 miles 

 from the coast of Africa, there is a constant N.E. wind. 



5. On the American side of the Caribbae Islands the N.E. wind be 

 comes nearly E. 



6. The trade winds extend 3 or 4 further M. and S. on the W. than 

 on the E. side of the Atlantic. 



7. Within -t of the Equator, the wind is always S.E. : it is more E. 

 towards America, and more S. towards Africa On the coast of BraziJ, 

 when the sun is far north \vards, the S.E. becomes more S., and the N.E, 

 snore E., and the reverse when the sun is far southwards. 



t>. On the coast cf Guinea, for 1500 miles, from Sierra Lcono to '*'-. 

 340 



