312 
MR. GLAISHER ON THE THERMOMETRICAL OBSERVATIONS 
Table III. — Showing' the excess of the monthly mean temperature, in every year, 
above the mean temperature of the month, as deduced from all the years. 
Year. 
January. 
February. 
March. 
April. 
May. 
June. 
July. 
August. 
September. 
October. 
November. 
December. 
1774 . 
o 
- 41 
- 6-7 
+ 1'4 
o 
+ 1-0 
O 
- 1-3 
+ 2-3 
+ 6-4 
o 
-06 
- i -7 
- 6-6 
o 
- 3-5 
o 
- 1-9 
1775 . 
+ 4-8 
+ 3-2 
+ 0-3 
+ 3-9 
+ 1-7 
+ 4-8 
+ 1-6 
00 
+ 2-0 
- 1-2 
- 2-5 
+ 0-3 
1776 . 
- 8-6 
+ 1-3 
+ 2-3 
+ 1-4 
- 1-8 
+ 0-9 
+ 1-4 
- 0-1 
- 1-9 
+21 
0-0 
+ M 
1777 . 
- 1-7 
-29 
+ 3-2 
- 1-8 
-01 
- 1-5 
- 0-9 
+ 1-6 
+ 1-7 
+ 1-9 
+ 1-0 
- 3-2 
1778 . 
- 0-8 
-31 
- 1-3 
+ M 
+ 2-4 
+ 3-5 
+ 5-6 
+ 2-7 
-30 
- 3-4 
+ 2-0 
+ 3-8 
1779 . 
- 0-8 
+ 6-6 
+ 5-6 
+ 4-9 
+ 2-3 
+ 0'2 
+ 3-5 
+ 3-1 
+ 4-3 
+ 2-5 
- 0-8 
+ 1-2 
1780 . 
1781 . 
- 70 
+ 0-6 
- 3-4 
+ 1-6 
+ 7-8 
+ 1-2 
- 2-2 
+ 0-3 
+ 3-7 
+ 0-7 
+ 1-3 
+ 4-7 
+ 1-8 
+ 3-9 
+ 4-9 
+ 2-2 
+ 2-9 
+ 0-6 
- 3-2 
- 2-4 
1787 . 
+ M 
+ 0-8 
+ 1-4 
- 1-4 
-11 
0-0 
00 
+ 0-3 
- 2-0 
- 0-8 
-31 
+ 0-6 
1788 . 
+ 1-8 
0-0 
- 2-8 
+ 3-7 
+ 3-9 
+ 0-8 
- 0-8 
- 0-9 
- 0-5 
- 0-3 
- 2-1 
-100 
1789 . 
- 2-2 
+ 1-2 
-70 
- 1-7 
+ 0-8 
-30 
- 2-6 
- 0-6 
- 1-8 
- 2-6 
-40 
+ 2-6 
1790 . 
+ 30 
+ 2-5 
+ 1-8 
- 4-9 
+ 0-2 
-10 
- 2-3 
- 0-9 
- 2-5 
+ 0-1 
-07 
0-0 
1791 .- 
+ 4-2 
+01 
+ 0-7 
+ 3-0 
-30 
-02 
- 1-9 
+ 0-6 
+ 0-4 
- 2-8 
- 1-4 
- 4-2 
1792 . 
- 0-7 
- 1-3 
+ 0-7 
+31 
- 2-8 
- 3-4 
- 2-8 
+ 1-4 
- 1-0 
-07 
+ 0-5 
+ 1-0 
1793 . 
- 0-3 
+ 1-0 
-21 
- 3-4 
- 1-7 
- 2-4 
+ 3-5 
- 1-8 
- 3-6 
+ 2-5 
+ 0-2 
+ 2-0 
1794 . 
- 2-3 
+60 
+ 2-9 
+ 3-8 
- 1-8 
- 0-2 
+ 3-9 
- 1-4 
- 2-7 
-11 
+ 0-6 
- 2-2 
1795 . 
- 11-7 
- 4-6 
- 2-8 
- 0-7 
- 0-5 
-41 
- 2-5 
00 
+ 4-4 
+ 4-0 
- 2-0 
+ 5-8 
1796 . 
+ 9-7 
+ 0-9 
- 2-4 
+ 2-5 
- 2-3 
- 1-7 
- 2-8 
- 0-9 
+ 2-7 
- 2-9 
- 2-4 
- 8-6 
1797 . 
- 0-2 
-31 
- 3-5 
-11 
-M 
-30 
+ 1-9 
-18 
- 1-8 
- 2-4 
- 1-3 
+ 2-2 
1798 . 
+ 2'2 
- 0-8 
- 0-7 
+ 3-4 
+ 1-2 
+ 3-4 
- 0-2 
+ 0-7 
+01 
+ 0-4 
-27 
- 5-3 
1799 . 
- 2-3 
- 2-3 
- 4-2 
- 4-3 
- 2-9 
- 2-2 
- 1-6 
- 3-3 
-21 
-21 
+ 0-2 
- 6-2 
1800 . 
+ 1-3 
- 4-6 
- 3-9 
+ 2-6 
+ 16 
- 2-7 
+ 1-8 
+ 2-9 
+ 1-5 
- 1-5 
- 0-5 
- 0-8 
1801 . 
+ 3-9 
-02 
+ 2-7 
- 0-4 
+ 1-2 
+ 0-6 
- 0-9 
+ 1-7 
+ 2-3 
+ 1-5 
- 2-5 
- 2-9 
1802 . 
- 2-7 
+ 0-2 
- 0-2 
+ 2-7 
- 2-2 
- 0-2 
- 4-9 
+ 4-0 
+ 0-6 
- 4-9 
- 2-2 
- 1-2 
1803 . 
- 2-2 
- 2-4 
+ 0-9 
+ 2-0 
- 2-3 
-16 
+ 2-3 
+ 0-9 
- 3-7 
- 0-5 
- 0-8 
+ 4-3 
1804 . 
+ 7-6 
- 1-8 
- 0-3 
-2 1 
+ 4-2 
+ 3-5 
- 1-2 
-09 
+ 3 + 
+ 2-0 
+ 1-4 
- 3-4 
1805 . 
- 11 
00 
+ 0-6 
- 0-5 
- 2-8 
- 3-3 
- 2-3 
+ 0-9 
+ 2-9 
- 2-0 
- 2-8 
+ 0-5 
1806 . 
+ 5-0 
+ 2-8 
- 0-7 
- 2-8 
+ 2-6 
+ 2-0 
- 0-2 
+ 0-6 
+ 0-6 
+ 1-8 
+ 4-7 
+ 7-8 
1807 . 
+ M 
+ 1-3 
- 4-4 
- 0-4 
+ 2-6 
-01 
+ 2-1 
+ 2-9 
- 3-3 
+ 3-6 
-40 
- 2-4 
1808 . 
+ 1-4 
- 2-4 
- 4-3 
- 3-3 
+ 4-7 
+ 0-2 
+ 4-3 
+ 1-7 
-11 
- 3-3 
+ 1-2 
- 3-0 
1809 . 
- 5-2 
+ 5-4 
+ 1-2 
- 4-7 
+ 3-3 
- 0-3 
- 1-8 
- 1-9 
- 0-3 
+ 0-2 
- 3-2 
+ 2-0 
1810 . 
- 1-2 
-01 
+ 0-8 
+ 0-6 
- 2-7 
+ 0-7 
- 0-5 
- 0-3 
+30 
+ 2-4 
+ 0-1 
- 0-4 
1811 . 
- 2-9 
+ 1-2 
+ 15 
+ 2-1 
+ 2-9 
- 0-7 
- 1-4 
- 3-2 
+ 0-8 
4 - 5-6 
+ 2-3 
- 0-6 
1812 . 
+ 0'3 
+ 2-9 
-30 
- 4-3 
- 1-2 
- 3-8 
-44 
- 3-8 
_ 0-5 
- 0-6 
- 2-1 
- 3-9 
1813 . 
- 1-2 
+ 2-9 
+ 1-7 
- 2-0 
- 0-1 
- 2-5 
- 2-5 
- 2-5 
- 1-9 
-2 1 
- 2-5 
- 2-4 
1814 . 
- 8-7 
- 4-7 
- 6-3 
+ 2-3 
- 3-8 
- 4-4 
- 0-3 
- 2-2 
_ l -5 
- 2-1 
- 2-0 
+ 2-1 
1815 . 
- 3-7 
+ 2-5 
+ 3-6 
+ 0-8 
+ 2-3 
+ 0-2 
- 1-5 
- 0-4 
+ 5-9 
+ 2-0 
- 3-8 
- 2-0 
1816 . 
+ I'l 
-21 
-22 
- 2-4 
- 3-6 
- 4-7 
- 6-9 
- 2-9 
+ 2-5 
+ 1-4 
- 3-4 
- 1-2 
1817 . 
+ 3-6 
+ 3-9 
- 0-2 
- 1-9 
- 4-5 
+ 1-3 
- 3-7 
- 5-4 
- 0-9 
- 4-4 
+ 4-2 
- 1-9 
1818 . 
+ 3-7 
-2 9 
- 0-5 
- 0-2 
+ 0-1 
+51 
+ 4-8 
+ 2-8 
+ 4-3 
+ 4-3 
+ 6-5 
- 0-2 
1819 . 
+ 4-5 
+ 1-3 
+ 2-6 
+ 2-4 
+ 1-8 
- 4-4 
+ 0-3 
+ 3-0 
+ 17 
- 1-9 
- 1-9 
- 2-0 
1820 . 
- 3-9 
- 1-8 
-0 1 
+ 3-5 
- 0-4 
- 1-7 
- 1-9 
- 2-3 
-20 
- 2-4 
- 1-3 
+ 0-9 
1821 . 
+ 1-9 
- 2-7 
+ 1-4 
+ 4-6 
-30 
- 3-7 
- 3-7 
+ 0-9 
+ 3-2 
+ 0-9 
+ 4-9 
+ 5-3 
1822 . 
+ 4-2 
+ 4-6 
+ 5-9 
+ 0-9 
+ 3’4 
+ 4-8 
+ 1-1 
+ 0-5 
- 0-4 
+ 2-6 
+ 5-5 
- 2-6 
1823 . 
+ 3-8 
- 0-6 
- 1-6 
-30 
+ 2-2 
- 2-4 
- 2-3 
-10 
-10 
- 1-8 
+ 0-3 
+ 0-9 
1824 . 
+ 1-8 
- 2-5 
- 1-9 
-20 
- 2-9 
- 2-8 
+ 1-1 
- 0-8 
+ 1-3 
+ 0-4 
+ 3-5 
+ 2-8 
1825 . 
+ 2-8 
- 0-6 
- 2-9 
+ 2-9 
+ 1-2 
+ 11 
+ 3-8 
+ 1-0 
+ 3-5 
+ 1-4 
- 1-5 
+ 1-6 
1826 . 
- 3-6 
+ 3-5 
+ 1-8 
+ 3-2 
- 2-4 
+ 5-1 
+ 4-2 
4 - 2'6 
-01 
+ 3-0 
- 2-8 
+ 2-8 
1827 . 
— 2*2 
- 7-1 
+ 1-7 
+ 10 
+ 0-3 
- 0-2 
+21 
- 1-8 
+ 0-5 
+ 2-4 
- 1-2 
+ 5-1 
1828 . 
+ 4-2 
+ 1'5 
+ 2-1 
+ 0-7 
+ 1-9 
+ 2-2 
+ 0-5 
- 1-8 
+ 1-1 
+ 0-5 
+ 1-6 
+ 5-5 
1829 . 
- 3-9 
- 0-3 
- 2-4 
-21 
+ 2-1 
+ 1-2 
- 1-3 
- 3-1 
- 3-2 
- 1-9 
- 3-4 
- 4-1 
1830 . 
- 4-9 
— 4*5 
+ 4-4 
+ 2-5 
+ 2-3 
- 2-5 
+ 1-6 
- 2-6 
- 2-9 
+ 1-5 
+ 17 
- 4-1 
1831 . 
- 1-2 
+ 2-5 
+ 2-5 
+ 2-3 
+ 0'4 
+ 1-6 
+ 2-9 
+ 2-5 
00 
+ 5-6 
+ 1-6 
+ 3-0 
1832 . 
+ 1-7 
- 1-8 
-09 
+ 1-4 
- 0'9 
+ 1-4 
- 0-2 
+ 0-2 
+ 0-2 
+ 1-8 
+ 1-0 
+ 3-4 
1833 . 
- 11 
+ 3-7 
- 3-8 
- 0-6 
+ 7-0 
+ 2-0 
- 0-3 
- 3-3 
- 2-9 
-11 
+ 0-8 
+ 5-6 
1834 . 
+ 8-8 
+ 1-5 
+ 2-6 
- 0-8 
- 0-5 
+ 3-3 
+ 2-7 
+ 1-5 
+ 1'9 
+ 1-1 
+ 1-4 
+ 2-0 
1835 . 
+ 2-4 
+ 2-5 
- 0-4 
+ 0-6 
+ 0-5 
+ 2-2 
+ 3-0 
+ 2-5 
+07 
- 1-4 
+ 0-3 
- 4-1 
1836 . 
+ 1-6 
- 1-8 
+ 2-3 
- 2-5 
+ 0-4 
+ 1'2 
+ 1-5 
- 1-9 
-30 
- 2-0 
- 1-2 
+ 0-6 
1837 . 
+ 1-6 
+ 1-6 
- 5-6 
- 6-7 
- 4-6 
+ 0-3 
- 0-1 
- 0-7 
- 1-4 
+ 1-2 
- 1-6 
+ 2-2 
1838 . 
- 6-7 
- 5-8 
+01 
- 4-2 
- 1-7 
-06 
- 0-9 
- 1-2 
-20 
+ 0-6 
- 1-9 
- 0-4 
1839 . 
+ 1-6 
+ 0-4 
- 2-4 
- 4-9 
- 2-5 
+ 0-9 
- 1-2 
- 1-9 
- 0-8 
- 0-5 
+ 2-0 
+ 0-6 
1840 . 
+ 3-4 
- 0-6 
- 3-8 
+ 2-0 
+M 
- 3-5 
- 2-6 
+ 1-3 
- 2-3 
- 2-6 
+ 0-7 
- 57 
1841 . 
- 11 
-35 
+ 5-4 
+ 0-5 
+ 4-4 
- 1-5 
- 3-4 
- 0-8 
+ 10 
00 
+ 0-5 
+ 1-6 
1842 . 
1843 . 
- 2-4 
+ 4-1 
+ 2-1 
- 2-6 
+ 2-9 
+ 11 
- 1-2 
+ 1-7 
+ 0-8 
- 0-7 
+ 5-5 
- 2-3 
- 0-9 
+ 4-5 
00 
- 3-5 
+ 0-2 
+ 4-9 
The sign — denotes that the ten)perature of that month was below the average, 
and the sign + denotes that it was above the average. 
