426 Mr. Hanson' sMeteorologicalJournalfur Manchester. [June^ 



General annual mean temperature upon the 12 years, 48'7. 

 Annual mean of the past year, 50*7 ; difference 2° above the 

 general mean. From the above it ap'pears, that the temperature 

 of 1819 has been uniformly above the general temperature, 

 except in November and December. The greatest differences 

 were in .January, March, April, and August. My friend Mr_ 

 Edward Stelfox, of Lymn, near Warrington, has favoured me with 

 his account of rain. Mr. S.'s rain-gauge is exactly the same as. 

 mine, and I can rely upon his account as correct : his farm 

 adjoins the rivers Mersey and Bollin, and is very much subject 

 to be flooded. In January there fell 3*224 inches ; February, 

 3-013; March, 1-352; April, 1-988; May, 2-035 ; June, 2-641 ; 

 July, 2-649; August, 1-497 ; September, 1-695; October, 3-030; 

 November, 1-881; December, 4-300 inches : total, 29-30& 

 inches. Mr. Stelfox says, that the snow which fell on the night 

 of Dec. 29 and the following day measured eight inches in depth. 

 He observed the temperature on the mornings of Dec. 10 and 13 

 to be 19^. 



Results of the Weather. (See the accompanying chart.) 



Barometrical Pressure. — Mean, 29-72 ; highest, 30-64; lowest, 

 28-60 ; range, 2-04 ; greatest variation in 24 hours, 1 ; meaa 

 ■daily spaces in inches, 5-5 ; number of changes, 8 ; real spaces, 

 in inches, 8-8 ; real number of changes, 20. 



Temperature. — Mean, 32-6; highest, 53; lowest, 13; range,, 

 40 ; greatest variation in 24 hours, 19. 



Rain, S)C. — 1-075 inch ; number of wet days, 7; foggy, 21; 

 snowy, 14 ; haily, 0. 



Winds. — North, ; north-east, 2 ; east, 7 ; south-east, 6 ; 

 south, 4 ; south-west, 5 ; west, ; north-west, 2 ; variable, 5 ^ 

 C'dlm, ; brisk, 1 ; boisterous, 1. 



The greatest daily variation of the barometer took place on 

 the 19th, accompanied with fog, rain, and snow, and was pre- 

 ceded by a boisterous north-east wind, which drifted the falling^ 

 snow very much. It was on this day that the lowest state of the 

 pressure occurred. 



The reporter has been particularly attentive to the barometri- 

 cal oscillations during the above period. There have been 20 

 changes ; that is, risings and falls ; and the mercurial surface ha& 

 risen and fallen nearly nine inches. The monthly mean is a 

 little more than a general mean : the highest extreme was on 

 the evening of the 8th, attended with an east wind and a little 

 snow. The temperature during the first three weeks averaged 

 28-6°; fourth week, 40-5°. On the morning of the 1st, and 

 -during part of the forenoon, the temperature was 19° below 

 freezing; and in some exposed situations, it is said to have been 

 as low as 9°, or 22°, under freezing. On the breaking up of the 

 frost about the 20th, the ice was noticed in some places, about 18^ 

 inches thick ; and where the ground wo.s nearly free froai 



