132 



18. — ^Meteorological Obseetatioxs taken at CASSioBrRT House 



FKOii Mat to December, 1875. 



By the Eight Honourable the Earl of Essex. 



[Read 13th January, 1876.] 



Abstract.''^ 



May. — The mean pressure of the atmosphere was 30"06 ins. ; 

 the highest readme:, 3()-45 ins. on the 11th; the lowest, 29-34 on 

 the 6th; range. Til in. 



The mean temperature of the air was 55°-6 ; the highest, 78° on 

 the 15th ; the lowest, 36° on the 31st ; range, 4'2°: the mean high 

 day temperature, 66°-7 ; the mean low night temperature, 44°'5 ; 

 inean daily range, 22°'2. The highest temperature in the sun was 

 10.^° on the 15th. 



The direction of the wind was H^.W. on 7 days, N.E. on 4, 

 E. on 2, S.E. on 1, S.W. on 13, and W. on 4. 'Westerly winds 

 (N.W. to S.W.) mostly prevailed for the first half of the month, 

 and north-easterly only on the last few days. 



Rain fell on 6 days, the total amount being 2"17 ins., and the 

 greatest fall in one day 0-87 in. on the 6th. 



A " heavy blight " was noticed at 2 p.m. on the 27th. 



June. — The mean pressure of the atmosphere was 29-90 ins. ; 

 the highest reading, 30-30 ins. on the 24th; the lowest, 29-55 ins. 

 on the 15th; range, 0-75 in. 



The mean temperature of the air was 59°-6 ; the highest, 80° 

 on the 4th ;f the lowest, 41° on the 1st; range, 39°: the mean 

 high day temperature, 69°-5 ; the mean low night temperature, 

 49°"9 ; mean daily range, 19°*6. The highest temperature in the 

 sun was 103° on the 3rd. 



The direction of the wind was N.E. on 6 days, E. on 1, S.E. 

 on 2, S. on 3, S.W. on 14, and W. on 4. Easterly winds 

 prevailed for the first few days, and then south-westerly to the 

 17th, and again towards the end of the month. 



Rain fell on 16 days, from the 8th to the 20th inclusive, and on 

 the last 3 days ; the total amount being 3-00 ins., and the greatest 

 fall in one day 0-50 in. on the 9th. 



There was a slight thunderstorm at 2 p.m. on the 9th. 



July. — The moan pressure of the atmosphere was 30-05 ins. ; 

 the highest reading, 30*40 ins. on the 6th and 28th ; tlie lowest, 

 29-60 ins. on the 11th; range, 0-80 in. 



• In preparing this summary of the Earl's daily observations no coiTcctions 

 have been applied to any of the rcadinjjs ; but as the barometer reads about 0-28 

 in. too high, and the height above the sea is 2.58 feet, the figures given represent 

 approximately the sea-level pressure. The mean temperatures are deduced from 

 the daily readings of the maximum and minimum thermometers. The observa- 

 tions were taken at 9 a.m. — En. 



t The only day in the year on which the shade tcmpernture is recorded as 

 having reached 80'. 



