in order to af certain the height of Mountains . 527, 
were here compared; and at a quarter after nine, begin- 
ning my walk, I arrived, not without fome fatigue, at 
the top of the mountain about noon.. The view from 
thence was incredibly beautiful. Every object, that from 
Geneva was ftriking, from thence appeared with an ad- 
ditional effect. The mountains feemed higher and 
nearer; the plain appeared a more perfect level, the fmall 
inequalities from this height becoming infenfible ; and 
a larger portion of the lake prefented itfelf: behind me 
an innumerable collection of naked points and precipices, 
all new objects, that from below are hid by the mountain, 
afforded frefh and moft aftoniihing ideas of this very 
lingular part of the creation. The clouds however (for 
it was a little hazy) unfortunately prevented my feeing 
Mont Blanc and the Glacieres, which were Hill farther 
behind. Some of the clouds were below me, and very 
near; exhibiting to me; at that time, a very lingular phe- 
nomenon of the thunder grumbling under my feet. I 
was occupied here between four and five hours with dif- 
ferent obfervations. The barometrical ones I am now 
going to relate ; and I lhall at the fame time give the 
computations of them according to Mr. de luc’s me- 
thod, or rather according to Dr. Horsley’s reduction of 
it to the fcales and meafures of this country (vide 
Philof. Tranf. vol. LXIV.) with this, difference, that I 
have 
