Mr. J. Glaisher's Remarks on the Weather. 1 39 



The mean monthly values of the several subjects of investi- 

 gation during the past quarter are published in the Quarterly 

 Report of the Registrar-General. Their quarterly values are 

 shown in the following table : — 



The mean of the numbers in the first column is 29*561 

 inches, and it represents that portion of the reading of the 

 barometer due to the pressure of air; the remaining portion, 

 or that due to the pressure of water, is 0*322 inch; the sum 

 of those two numbers is 29'883 inches, and it represents the 

 mean reading of the barometer for the quarter ending June 30, 

 1850. 



The mean of the numbers in the second column for Guern- 

 sey, and those places situated in the counties of Cornwall and 

 Devonshire, is 53°*5 ; at Liverpool and Whitehaven is 51°*6; 

 for those places situated south of latitude of 52° is 53°; for 

 those places situated between the latitudes of 52° and 53° is 

 52°; between latitudes 53° and 54° is 51 o, 0; and for Durham, 

 North Shields and Newcastle is 49°*3. The fall of rain was 

 greatest in Cornwall and Devonshire, averaging 8*3 inches ; 

 and it was the least between the latitudes of 52° and 53°, ave- 

 raging 4°*8 inches. 



The highest reading of the thermometer in air was 87° at 

 Uckfleld and Nottingham ; and the lowest readings were 25° 

 at Uckfield and 26° at Wakefield. The extreme range of 

 temperature during the quarter in England was therefore 

 about 60°. 



The least daily ranges of temperature took place at Guernsey, 

 Liverpool and North Shields; their mean value was 10°*4: 

 and the greatest occurred at Uckfield, Aylesbury and Hart- 

 well ; their mean value was 21°*3. 



The least monthly ranges of temperature occurred at Guern- 

 sey, Torquay and Liverpool; their mean value was 25°*1. 

 The greatest took place at Uckfield, Aylesbury and Notting- 

 ham, and their mean value was 45°'8. 



Rain fell on the least number of days at Helston, Holkham, 

 Norwich and Newcastle; the average number at these places 

 was 33. It fell on the greatest number of days at North 

 Shields, Wakefield and Derby. The average number at these 

 places was 56. The places at which the largest falls took place 

 were Southampton, Stonyhurst and Exeter ; and the average 

 amount at these places was 9*5 inches. The smallest falls 

 occurred at Hartwell^ Holkham and Liverpool ; and their 

 average was 4 inches. 



Wheat in ear, on June 9 at Aylesbury; on the 10th at 

 Leinslade and Hawarden ; on the 11th at Holkham; on the 

 12th at Cardington; on the 16th at Helston, Stone, Hartwell 



