352 REPORT—1840. 
curve of Trevandrum* (marked by a dotted line), in which 
the daily range for the annual curve greatly exceeds that of 
all the other curves in the diagram, a new result which no 
person could have anticipated. 
Barometrical Observations. 
Sir D. Brewster then proceeded to give a general account 
of the barometrical observations. The daily oscillations which 
they indicated correspond both in time and in magnitude with 
those which had been made in other parts of the world; -but 
as the corrections had not yet been applied to all the observa- 
tions, it was deemed unnecessary to make a more minute state- 
ment. 
Observations on the Wind. 
In comparing the number of hours of calm throughout the 
year, it appeared that they occurred when the temperature 
was lowest, and upon laying them down in a curve this curve 
was almost exactly the reverse of that of the mean daily tem- 
perature for the year; that is, the wind, or the commotions 
in the atmosphere, depends on and varies with the tempera- 
ture. 
‘‘This very important and new result,” Sir D. Brewster 
remarks, ‘‘ is confirmed, in a remarkable manner, by the ob- 
servations of Mr. Osler at Birmingham, made at the request 
and expense of the British Association, which I have seen 
since I arrived in Glasgow ; observations of inestimable value, 
which exhibit more important results respecting the phzeno- 
mena and laws of wind than any which have been obtained 
since meteorology became one of the physical sciences.” 
The Kingussie and Inverness observations contain many 
curious observations on the Aurora Borealis and other atmo- 
spherical phenomena, for an account of which we must refer 
to a fuller report, which will appear in a future volume of the 
Transactions of the British Association. 
* The mean temperature is reduced 30°, so as to bring this curve among 
the other curves. 
