XX 
FIFTH REPORT — 1835 . 
Observations on the horary oscillations of the barometer at 
considerable heights above the sea. This more particularly ap¬ 
plies to places near the equator*. 
Additional observations to determine what is the influence 
of the moon on the height of the barometer. ( Reports, vol. i. 
p. 234. See also Arago, Annuaire for 1833.) 
The application of the hygrometric correction to the baro¬ 
metric formulae for heights. ( Reports, vol. i. p. 254.) 
Observations on the phaenomena of wind at two stations at 
considerably different elevations. [Reports, vol. i. p. 249.) The 
direction of the wind should be noted in degrees, beginning from 
the south and proceeding by the west. 
Magnetical observations, regularly conducted, especially with 
a view to auroral phaenomena. 
MAGNETISM. 
Resolutions of the Committee . 
1. That a series of observations upon the intensity of Ter¬ 
restrial Magnetism be executed in various parts of the kingdom, 
similar to those which have been carried on in Scotland by Mr. 
Dunlop f. 
2. That observations should be made in various places with 
the Dipping-needle, in order to reduce the horizontal to the true 
magnetic intensity. 
3. That it be represented to the Government of this country 
that it would be of great service to Science if Magnetical and 
Meteorological Observatories were established in several parts 
of the earth, furnished with proper Instruments, well conducted 
on uniform principles, and if provision were made for careful 
and continued observations at those places; that in Great Bri¬ 
tain and its colonies there are points favourable for such obser¬ 
vations ; and that it is more desirable that the British nation 
should take a part in carrying them on, since a system of simi¬ 
lar observations has begun to be established in France and its 
dependencies. 
* Those who may possess such observations, continued for one or more weeks, 
with observations of the temperatures of the mercury and of the air, and the 
probable corresponding temperatures of the air at the level of the sea, are requested 
to transmit them to Professor Forbes, Edinburgh. The local position of the 
point of observation should also be noticed. 
f See Dr. Traill’s experiments, Reports of the Association, vol. i. p. 557 : 
and those of Professor Lloyd, vol. iv. p. 117. 
