Aqueous Vapour Atmosphere. 115 
a fine breeze from the west contributed to 
dissipate the fog; so that in the space of 20 
or 30 minutes we had to extend our vision 
from the confines of a few rocks at 50 or at 
the furthest 100 yards off, to the limits of the 
horizon where the sea and sky met, which 
was some distance beyond the Isle of Man, 
where the glistening of the sea was conspicu- 
ous. Several ships were seen at sea, and the 
whole western view was as fine and clear as 
possible. 
July 9th.— Observations on the ascent from 
Wasdale to Stye-head and over the mountains 
to Langdale. 
The intercourse between Wasdale and 
Langdale is by a road which rises almost to 
the height of the first-rate mountains. At the 
highest place it is 760 yards above the sea; 
and it is remarkable, that place is the finest 
part of the road, being asmooth, green, level 
plain. It is said that horses have been led 
over from one valley to the other; but it is 
excessively steep on the Langdale side. 
From Wasdale the first part of the road is 
the ascent to the Stye-head; which is toler- 
able horse road. The height is 475 yards 
above the sea. To this place the roads from 
Wasdale to Borrowdale and Langdale unite : 
