Aqueous Vapour Atmosphere. 117 
1816.— Observations on Helvellyn. 
July 8th.—Fine and sunny, but cold for the season. 
Hi. above the Temp. 
adjacent valley Temp. Dew- of 
& lake, in yds. of air. point. Water. 
12P.M. Summit........ S55R2..: SHE A cont DO ensues — 
Drrstnnane Brownrigg- t ne 
Well... DES edeveen cee perectiee 7 ie 4. 
or 
si Sa (at BOOS AT ae sa 
place 
th a IntheValley  0........ estes 50o0r51 — 
ae Hag ice i Oe Cee 45 a ae 
Ami 
Next Morning 0........ ts) ear 50° at Low-wood, 
N.B. There were two large snow-drifts 
on Helvellyn; and others were seen on the 
mountains. ‘Took some down with me and 
kept it for experiments at Low-wood and at 
Keswick. 
. —0.70— 
1818.—Observations on Helvellyn. 
July 7th.—Morning rainy : mid-day cloudy 
and some showers of rain and hail: evening a 
thunder storm over great part of the counties 
of Cumberland, Westmoreland, and Lan- 
cashire. 
’ 
