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FOR Til K Cl ja'I.VX A IT fiAZKTTE. 
jYo, - 3 . 
Cincinnati Heading-Room, August 24, 1612. 
Having commenced a series <4 meteorological 
remarks in the Gazette, 1 find a notice tine to an 
annual cool spell in August. 
Yesterday and to-da) have been remarkably 
cool—so much so ;ts to render fires agreeable— 
tb.e nights have been rnncii cooler since the 16th 
iastant, than they were for many weeks previ 
ous; and slow rains without thunder, river logs, 
or either heavy dews, or dense clouds have been 
mere frequent. 
As bar as my observation goes, I find we gene¬ 
rally, though not universally, have as cool or 
cooler weather—by day especially—within or 
during the last 16 days of August than we have 
throughout all September, (especially the first 
half) It is now about the middle of those 16 
days, we may therefore consider this cool spell 
as the acme of the period :—these two days past 
were nearly as remarkable for coolness, in 1317 
and 1818. ' 
If an annual cool spell, such ns I describe, be 
admitted to exist, as 1 trust it will be, a question 
arises, why is it so? Were it not that we find 
our relatively cold and hot weather, more tie- 
pendant oil die course, velocity and period of 
thd wind, than on tiie sun’s rays, it might—by all 
those admitting my neUf theory of open poles— 
be explained as follows : 
The sun is now probably so.far south ns to 
cease ;o shine forcibly under our feet at night; 
hence the ground must abound less in heat, ei¬ 
ther latent or free, which would measurably ac¬ 
count for the heavy dews and fogs, (which are 
condensed near tfie earth and settle upon all 
growing tr \ s and vegetables, which are good 
conductors,) oy admitting the moisture of the air 
to be Condensed and denositerl he i \ C' r»* • 1 <u : i j 
