$8 A COMPARISON BETWEEN THE 



mum of the barometer in London was 30.123, the minimum 

 29.427 ; the mean 29.813, and the range .696. In Malvern, 

 the maximum was 29.590, the minimum 28.850 ; the mean 

 29.243, and the range .740. 



Hence, for the spring quarter — 



Mean Height. Mean Range. 



London 29.931 1.122 



Malvern 29.348 1.123 



In March, (on the 7th) the minimum occurred at Malvern at 

 9 a. m. ; in London, not until 3 p, m. At the former place were 

 veri/ heavy showers, with light wind ; at the latter, lightly overcast, 

 brisk rvind. On the morning of the 8th they both again coincided. 

 From this it would appear that the great atmospheric oscillations 

 sometimes take five or six hours in their movement across the space 

 dividing Malvern and London. 



DEW POINT. 



In December, the maximum dew-point was, in London, 

 53°, in Malvern also 53° ; the minimum in London 33°, in 

 Malvern, 32° ; the mean in London 41.3, in Malvern 40°. 



In January, the maximum in London 48°, in Malvern 

 48.5 ; the minimum in London 17°, in Malvern 21° ; the 

 mean in the former place 35.6°, in the latter 36.1°. 



In February, the maximum dew-point in London was 45°, 

 in Malvern 49° ; the minimum in London 22°, in Malvern 

 30° ; the mean in London 36.3°, in Malvern 38.6°. 



For the winter quarter — 



Mean Dew-Point. 



London 37.7 



Malvern 38.2 



London. Malvern. 

 Mean elasticity of the vapour in the ) ^ o^-a a n^4 



air (for the season) | ^^60 0.264 



Mean weight of vapour (in grains) in 1 <, q-_ „ ^ -- 



a cubit foot of air (for the season) j" ^'^^^ '*•"'*' 



In March, the first month of the spring quarter, the maxi- 



