241 



The weight of a cubic foot of air is 533 grains, being 9 grains less than the 

 average. 



WiND.^Less amount of N. and S., greater of E. and W. 



j^Ai^.. — No. of da5's — 6 days more than the average — i inch more. 



In comparing the same with the average of 4 years (1846 to 1849) taken at 

 Hereford. 



The barometer and mean temperature are higher. 



Of rain there have been 10 days more and 13 in. less. 



South and West winds have prevailed over North and East, in the ratio of 

 3 to 2 nearly. 



The fair days, or those with nearly cloudless sky, and therefore sunny, are 

 about equal to the variable ones, and the overcast exceed them by about 60 days, 

 so that rather less than half the year consists of overcast days, and of the re- 

 mainder one half are fair and the other, or rather more than 3 months, are variable. 



The following Table shows the mean temperature of each month at Hereford, 

 and Greenwich Observatory, for the year 1858, and the same at the latter place as 

 deduced from daily observations of 43 years, from 1814 to 185b. 



From this we observe that in 1858 February was the coldest, and June the 

 hottest month, though in general January (9th) is the coldest, and July (30th) the 

 hottest. The temperature at Hereford was above the average in all the months 

 except February, May, July, and November. The first five months of the year 

 were warmer at Hereford than at Greenwich. That August, though very hot on 

 some days, exceeded the average by only one-tenth of a degree. 



WITH RESPECT TO THE SEVERAL MONTHS. 

 The Barometer. — Was highest (30.461 in.) in January, and lowest (28.771 in.) 

 in November. The highest mean was m January, and the lowest in May. 

 Every month in the year it has risen above 30 inches, and has gone below 

 29 inches only 5 months. 



