PROFESSOR FORBES ON THE CLIMATE OF EDINBURGH. 337 
37. Il. The Annual Range, as roughly represented by the difference of the 
hottest and coldest months, varied from 30°7 in 1814 to 17°°9 in 1886. The 
mean is 24°°1.* The importance of this element in estimating the character 
of any year with respect to temperature, is well illustrated by comparing the 
years 1826 and 1828, which stand third and fourth on the list of mean annual 
temperature; but whereas the former was the hottest summer recollected in 
Scotland, the last was remarkably the reverse, the annual mean being kept up 
by the mildness of both the preceding and following winter. Table III. con- 
tains the years arranged according to the amount of the Annual Range, where it 
will be seen that 1826 stands fourth in order, and 1828 jifty-jifth. 
TABLE III.—THE SEASONS ARRANGED ACCORDING TO THE DIFFERENCE OF HoTTEST AND 
CoLpEST MONTHS, BEGINNING WITH THE GREATEST DIFFERENCE.+ 



1. 
2. 
3. 
4. 
5. 
6. 
“G 

















38. It may be interesting to classify the years in the order of the mean tem- 
perature of the hottest month, distinguishing which month that is, as in the fol- 
lowing Table :— 
TABLE IV.—ContTaAInInNG THE MEAN TEMPERATURE OF THE Hottest MonTH IN BACH 
YEAR. 
1808 62'8 July 1824 59-89 Suly 
1803 62°74 July 1802 59°72 August 
1826 61.98 July 1818 59-7 July 
1807 61°9 July 1837 59°61 July 
1847 61°77 July 1804 59:26 June 
1819 61:7 August { 1834 59°26 July 
1846 61:60 June 1822 59°22 June 
1825 61:40 July 1795 59°19 August 
1798 61°36 June 1848 59:18 July 
1800 60°72 July 1796 59°17 August 
1805 60-4 July 1838 59°15 July 
1801 60°21 August 1840 59°14 August 
1831 60:10 August 1850 59°11 July 
1842 59°93 August 1835 59°09 ’ August 
* According to Mr Guatsuer, the mean difference of the hottest and coldest months at Green- 
wich for 79 years (1771-1849) is 28°-5, varying from 37°1 to 21°38. The climate of Greenwich is 
therefore more extreme than that of Edinburgh. The mean temperature of January is nearly a 
degree higher at Edinburgh than at Greenwich. 
+ In this Table the months in all cases belonged to the same Calendar Year. 
