[ <588 ] 
by the Scheme to be in another Method, and not 
filled up. 
Great Care has been taken, in calling up and di- 
viding, to get the exad Mediums and Sums; and I was 
not a little furprifed to find, in calling up the Column 
of the Mean Altitudes of the Thermometer collate- 
rally, that as thofe for July , being the hotteft Month, 
^il fo the Altitudes of June and Augujl , on 
are 
each Side of it, come out exactly equal to one another, 
and alfo thofe of May and September ; thefe laft only 
differing in their Morning and Evening Heats or 
Altitudes, which does not alter their Medium of 44-. 
Many other Obfervations may be made, both from 
the Scheme and Diaries at large, which, no doubt, 
will be taken notice of : But, having had ill Health of 
late, I am not able now to colled them, nor to form 
a Summary of the Winds, which l defigned to have 
added fome way or other in the fame Scheme. As 
for any Judgment about the Weather, &e. it will be 
much better had from thofe who have the Perufal 
and Comparifon of the many Meteorological Ac- 
counts fent to the Royal Society : I fhall therefore 
only give a few curfory Notes of my own, as I find 
them, and fo conclude this Letter. 
When there is an Hazinefs in the Air, fo that the 
Sun’s Light quails by Degrees, and his Limb is ill 
defined, it is a pretty certain Sign of Rain, efpecially 
if the Mercury falls. The like Hazinefs, at Night, is 
Hill more a Sign of it. 
It is obfervable, that though the Mercury , in the 
Summer Months, does not fo much vary in its Al- 
titude as at other times of the Year, yet in that Sea- 
fon 
