274- Mr. J. Glalsher on the Meteorology of England 



evaporation was S^*?, and above that of the dew-point was 

 6°'9, at places situated inland. 



The highest readings of thermometer occurred at Uckfield, 

 Helston, Beckington, Lewisham and Walworth respectively. 



The mean 3'early range of temperature in the counties of 

 Cornwall and Devonshire was 55° 6, at places in the vicinity 

 of the sea was 52°"6, and in latitude 51° 30' was 78°-0. This 

 value diminished by about 5° for an increase of 1° in latitude. 



The places of greatest yearly range were Uckfield, Beck- 

 ington, Lewisham, Walworth and Greenwich respectively. 



The places of least yearly range were Truro, Liverpool, 

 Brighton, Torquay and Whitehaven. 



The mean monthly range of temperature in latitude 51° 30' 

 was 40°; and this value seemed to diminish 3° for every in- 

 crease of 1° in latitude. 



The places of greatest monthly ranges were Uckfield, Beck- 

 ington, Lewisham, Greenwich and Cambridge respectively. 



The places of least monthly ranges were Truro, Liverpool, 

 Torquay and Whitehaven respectively. 



The mean daily ranges were greatest at Uckfield, Cam- 

 bridge, Lewisham and Greenwich respectively. 



The places of least daily ranges were Truro, Liverpool, 

 Whitehaven and Torquay respectively. 



The mean daily ranges in latitude 51° 30' were 16°'l ; and 

 this value diminished by about 1° for an increase of 1" of lati- 

 tude. 



With respect to the average strength of the wind, I can 

 speak with no confidence. 1 believe no two observers have 

 estimated its value upon the same scale. 



The prevailing direction of the wind in the counties of Corn- 

 wall and Devonshire was north-east and south-west, at Liver- 

 pool it was north-west, and at all other places it was south- 

 west. 



The amount of cloud may be considered to have been equal 

 at all places, and such as to cover about three-fifths of the sky. 



The average number of days in which rain fell was 152; 

 this number was greatly exceeded at Truro and at White- 

 haven, and was much less between the latitudes of 51° and 52°. 



The mean amount of rain fallen in the counties of Cornwall 

 and Devonshire was 35'8 inches, at Liverpool and White- 

 haven was 37*3 inches, and at all other places was 22*2 

 inches. This value was exceeded at Beckington, Hereford and 

 Derby. The places at which the smallest amounts of rain fell 

 are Walworih, Durham, Uckfield, Greenwich and Lewisham. 



The mean weight of water mixed with a cubic foot of air 

 was 3*8 grains in the counties of Cornwall and Devonshire, 

 and 3*5 grains at other places. 



