AND INSTRUMENTS AT MUNICH. 525 
: Magnetic Observations on the Hohenpeissenberg. 
By the desire of the King’s government I proceeded, in the 
middle of September 1841, to the Hohenpeissenberg, for the 
purpose of restoring, and supplying with magnetic instruments 
in particular, the observatory founded by the Palatinate Society, 
and after the dissolution of that Society adopted by our Academy. 
The observatory is at the parsonage-house, exactly on the 
summit of an insulated mountain, which rises in a conical form 
to a height of about 1000 feet above the plain, and 3400 feet 
above the level of the sea. 
Under the present arrangements the observatory occupies a 
space of about 30 feet in length and 12 in breadth, and contains 
the barometer of the Palatinate Society, a new thermometer for 
the external air, a wet-bulb hygrometer, and apparatus for 
magnetic declination and intensity of the construction described 
in the preceding pages. There is also a rain and snow-gauge, 
and an apparatus for the measurement of the electricity of the 
atmosphere is to be put up. 
I availed myself of my brief residence on the mountain to 
obtain a series of magnetic observations, consisting of— 
a. Observations of variations, including the term-day of the 
22nd of September. 
6. Determinations of absolute declination and intensity. The 
results are subjoined with the view of exemplifying the capa- 
bilities of the new instruments, and supporting those views of the 
relations of the earth’s magnetic force which have been ex- 
pressed in the earlier part of this memoir. 
[Dr. Lamont then gives a table occupying five quarto pages, 
containing the observations of variations of the declination and 
| intensity at Munich and at Hohenpeissenberg from the 20th to 
| the 24th of September. All the intensity observations are reduced 
| toa standard temperature by corrections experimentally deter- 
| mined. He remarks on these observations as follows] :— 
The comparison of the observations shows, that for the most 
part the same changes were found to occur at Munich and at 
Hohenpeissenberg, but that nevertheless the march of the in- 
struments was not parallel; the differences of declination and 
intensity at the two places were at one period, namely at the 
earlier portion of the observations, less, and at another period, 
namely in the latter portion of the observations, greater. This 
i 
