8f 
9 
9I 
10 
io| 
1 1 
III 
12 
Monday i 
morning 2 
2^ 
■*2 
3 
3l 
4 
4f 
5 
[ 329 ] 
+ 
1 
o 
u 
7 
9 
JO 
12 
Some appearance of clouds in the? 
S.E., 
Clouds gathering, and fonae wind: 
from E. 
Qiiite overcaft, wind E. 
Ditto 
Ditto 
It was obfervable, that after fun fetting, the atmof- 
phere had a tendency fonaetimes to turn a little foggy,, 
and again quickly to clear up, balancing, as it were, 
betwixt thefe two different ftates. It is worthy of 
notice, that the minute variations of the thermometer, 
asfet down in the above regifter, feemed to depend 
upon thefe different conflitutions of the air; the 
mercury always riling in the thermometer a fmall 
matter, when the miftinefs came on, 2 ind. vice verfa. 
In the intervals of obfervations, we made fome other 
experiments, which the prefent intenfity of the froft 
fuggefled ; particularly one relating to the evaporation- 
of ice, which was tried in the following manner.. 
I took a fquare reflecting metal belonging to my own. 
two foot telefcope, and expofed it on the baliuftrade. 
of the obfervatory, till it had acquired the tempera- 
tore of the place, which was then at o deg. after it?. 
Yol. LXL, U u, wiifc 
