[ *74 ] 
Year, more than might be expeded from Places at fuch 
a Diftance. 
The Winds are of fo uncertain and variable a Na- 
ture, that they require a more than ordinary Care and Di- 
ligence in making the Obfervations, and a great Length 
of Time, and Comparifon of a vaft Number of them, 
before any thing can be deduced more than is com- 
monly known ; and therefore 1 fhall not endeavour to 
do it at this Time, but only give this Hint, that if the 
Obfervers would take particular Notice, in great Storms, 
of the Time when the Mercury firft begins to rife, whe- 
ther before, or after, or in the very Height of it, it 
might be a Diredion to judge when an Abatement or 
Increafe of it might be expected, (if any regular Or- 
der fhould be found therein) which might be fervice- 
able on Lome Occafions. But if any Attempt fhould 
be made to lay down any thing certain concerning the 
Rife and Progrefs of the variable Winds, it will ap- 
pear, by confidering the Caufe of the Trade-Winds, 
that for the fame Caufe the Motion of the Air will not 
be naturally in a great Circle, for any great Space, upon 
the Surface of the Earth any- where, unlefs in the Equa- 
tor itfelf, but in fome other Line j and, in general, all 
Winds, as they come nearer the Equator, will become 
more and more eafterly, and as they recede from it, 
more and more wefterly, unlefs fome other Caufes 
intervene. 
Thefe are all the Obfervations I have at prefent to 
offer on this Sub j eft, which I fhould have been glad if 
they had been more material, and anfwerable to the 
Labour beftow'd by the curious Obfervers i but they 
may affure themfelves, that the Diaries communicated 
to the Society will be carefully preferved, for the Peru- 
fal 
