S 26 Mr Babbage on BcD’ometrical Measurements 
FeQt.' 
Bridge over the Staubbach, above the Inn at Lauterbrunnen, 148S.T 
Foot of Upper Fall above Inn, - . - 1210.9 
Top of the Great Fall above Inn, ' - - - 1078.5 
Foot of Great Fall above Inn, ~ . - 78.4 
Height of Great Fall, - - „ . 1000.1 
Mr Hersche], using almost the same data, and calculating by 
the tables of Oltmanus, has arrived at results nearly coincident 
with these. 
The stations where we placed the barometer are easily found, 
except that at the foot of the great fall, which I will now de- 
scribe more particularly. 
As you approach it by a path at the side of the stream which 
flows from it, the lower part of the fall appears partly hid by a 
heap^of debris, consisting of small stones brought down by the tor- 
rent. The little hill which is thus formed, is almost barren, and 
inclosed by wooden palings. We chose a situation where the 
eye was nearly on a level widi the spot where the water reaches 
the ground ; and looking for a spot on the hillock, as far as we 
could from the spray of the fall, and on the same level, we no- 
ticed a few shrubs, and at that spot placed our barometer. As 
you cross the railings, it is on the right hand, very near them, 
and at the beginning of the few shrubs that grow there. Al- 
though the atmosphere, both in the valley and on the mountain, 
was perfectly calm, in the neighbourhood of the bottom of the 
fall there was a strong but irregular current. We made four 
observations, and as they differ considerably, we took the means. 
They are as follows : 
No. 
Barometer. 
Attached 
Thermom. 
Detached 
Thermom. 
Inches. 
Fahrenheit. 
Reamur. 
I 
27.126 
58“ 
11°.8 
B b 
2 
27.106 
57.9 
do. 
B h 
3 
27.113 
57.8 
do. 
B b 
, 4. 
27.110 
57.8 
do. 
B h 
27.11375 
1 
The first of these differs so much from the mean, that it ought 
to be rejected as a bad observation ; and I should have omitted 
it, if the others had been more accordant amongst each otloer ; 
