150 Proceedings of the British Association. 
‘taken for each day. It was recommended that all these ob- 
rvations be printed in full. 
Sir D. Brewster made a Provisional Report on the Hourly Me- 
oneeterinn Observations at Inverness and Unst. The hourly ob- 
servations at Inverness were recommenced Nov. 1, 1840; but a 
difficulty presented itself to their renewal at Kingussie, which it 
was not easy to overcome. ‘The observations have in consequence, 
been transferred to Balta Sound, in Unst, the most northern of the » 
Shetland Islands, already distinguished in the history of science 
by astronomical observations made there in 1817 and 1818, by 
M. Biot and Capt. Kater. Dr. Edmonston, of Buness, undertook 
to superintend the observations, which were begun early the pres- 
ent year. The Isle of Unst being in N. lat. 60° 40’, Leith in 
55° 58’, and Plymouth in 50° 22’, and all of them nearly in the 
same meridian, a series of peculiarly valuable muni observations 
will now be obtained. 
Prof. Whewell delivered Reports on the seinelnarwntions vial 
at Bristol and at Leith. At the former station particular atten- 
tion has been given by Mr. Bunt to the effect produced by chan- 
ges of atmospheric pressure on the heights of high water. After 
a discussion of numerous observations, he concludes that the wa- 
ter is depressed by atmospheric pressure almost exactly as much 
as it would be raised in the tube of a water-barometer. From 
observations made at the latter station, Mr. Ross had made an 
investigation of the corrections of the height and time of high 
water due to lunar parallax and declination. 
A committee (of which Sir D. Brewster was chairman) Te- 
ported on the question how far the desiderata in our knowledge 
of the condition of the upper strata of the atmosphere may be 
by means of ascent in balloons or otherwise, and also 
ienoreed brief directions for such observations, with the probable 
expense of the necessary instruments.—The principal objects 1e- 
quired, are to determine the progression of temperature, and the 
law of the distribution of vapor, in ascending from the surface of 
the earth to the upper regions of the atmosphere. Observations 
of the thermometer and dew point should be unremitted during 
ee eieih of the ascent and descent, and of Cone; 
