124 
the cloud, although it must have been some hundreds of feet thick at the 
summit. 
This cloud was driving rapidly down the slope, the surface having a sort of 
billowy appearance but retaining its consistency until it reached the Fell foot, 
where it seemed to break up like spray at the foot of a waterfall, and then dis- 
appear ; there was a great quantity of this spray-like vapour in some places,— 
notably on both sides of Knock Pike, for some distance along the Fell foot. 
Murton Pike was enclosed in the cloud,—Dufton and Knock Pikes stood out 
but there was a thick cap on the top of Dufton Pike, retaining the shape of the 
Pike on its upper surface. I was reminded of the description given by Mr, 
Wallace and printed by the Royal Meteorological Society in their report.* On 
close observation one could see that immense masses of vapour were being 
driven rapidly down Dufton Gill, and, striking against the almost perpendicular 
eastern face of the Pike, were projected high into the air, until bent over by the 
upper current, when they fell downwards over the top of the Pike, and melted 
away about a qnarter of the way down the Pike side. Looking towards the 
East or East-south-east, the rolling billowy masses of vapour showed very dis- 
tinctly, and had a most magnificent appearance, lit up with the bright morning 
sun. 
The Bar was formed of a dense roll of cloud, at a low elevation, and stood a 
little west of the river Eden. It joined the Helm Cloud at both ends, and thus 
an almost clear space of blue sky was surrounded by dense masses of vapour. 
The form of this space was a tolerably regular ellipse, extending, roughly 
speaking, from Brough to Langwathby, the ends being rounded by the connec- 
tion between the Helm Cloud and the Bar. Looking South-west directly at the 
Bar (distant then short of half a mile) both ends appeared to be drifting towards 
the centre, or rather, towards a point straight opposite to where I stood. I 
believe, however, that this was merely an optical deception, caused by the laws 
of perspective, by which the vapour drifting South-westwards in parallel lines 
appeared to converge towards the point of sight. On going to a place directly 
under the Bar I found the vapour overhead driving straight towards South-west, 
streaming out of the clear air from North-east, and condensing as it approached 
the thick part of the Bar, just in the same way as is usual when the Bar stands 
nearer the Fell, and the endwise motion could not be discerned from that 
standpoint. 
There were no scraps of cloud driving across between the Helm Cloud and 
Bar, all the lower air being quite clear and bright between, from the place 
where the spray-like vapour disappeared to that where the condensation began, 
There was, however, a light fleecy cloud about the centre of the ellipse at a 
considerably higher elevation than the Helm Cloud, which had a gentle motion 
from East-north-east, with whirling eddies ; this cloud, though in constant 
* Quarterly Journal, Vol, XI. p, 283, 
