[ Si-7 ] 
Height of that Part of the Trade-wind, which I 
fuppofe to be turned this Way. 
With regard to the Breadth, I read in ampler, 
that they meet the Trade-wind at about 30 Degrees 
on this Side the Line as many Degrees on the 
other Side will make the Whole extend to 60 De- 
grees broad. Methinks I do not want fuch a Breadth, 
nor indeed can I fairly expert it. For fo much of 
this Wind as blows to the South of the mod Eaftern 
Point of South America , which, I think, is called 
Cape St. Auguftin , Ihould turn off Southward 5 the 
reft, which blows to the North of that Cape , I may 
lay Claim to. This Cape is in about 8 Degrees South 
Latitude, fo that I may demand a Breadth of 3 8 De- 
grees j but 1 will make an Abatement: For though 
the Trade-wind, to the North of the Line, be fome- 
times 30 Degrees broad, yet fometimes it is not above 
24 Degrees which Variation depends, as I fuppofe, 
on the Sun's Place in the Zodiac: So that it is 
narrowed in the Winter, and wideft in the Summer. 
Taking it then at the narroweft, when the Sun is in 
the Winter Solftice, we fhall have a Breadth of 32 
Degrees : But I allow 2 Degrees, to make Amends 
for the flack Wind, to the North of the Tropic of 
Cancer , and for the Calms near the Equator? and 
infift on 30 Degrees only, for the Breadth of that 
Trade-wind, which is to be reflected back to us. 
How high foever that Column of Air be, which 
is carried through this wide Space, no more of it can 
affeft us, than what is repelled by the Hills it ftrikes 
againft, and by the cold Air which hangs over them. 
I take thefe high Lands, and their incumbent Air, 
to be a Refiftance fufficient to repel the Trade-wind : 
The 
