30 
beginning of tlie series; it is a fact well worthy the thouglitfi 
attention of all horticulturists; the same thing is also shown i 
February, but to a less degree. Then, on the contrary, in the montl 
of May, June, and July, the + signs seem to be more frequent at tl 
beginning of the series than towards the end; particularly this i 
shown in the month of July, implying that our winter months ai 
somewhat warmer, and our summer months somewhat colder, tha . 
formerly. 
It will be seen that the same months have frequently been eithc 
above or below the average for three or four years in succession. 
By selecting under each month the largest number with the + sig 
and the largest number with the — sign, the warmest and coldest J fij 
the several months are shown, and are as follows:— 
o o ll'fl 
In January the greatest excess was S’2 in 1834, and greatest deficiency was 8‘6 in 181 „ 
,, February 
„ March 
„ April 
„ May 
„ June 
„ July 
,, August 
„ September 
,, October 
,, November 
„ December 
Therefore the largest monthly excess of temperature was 8°“2 ii 
January 1834, and the largest deficiency was 10 o, 6 in February 1855 
By taking the means of the numbers in each horizontal line i 
Table XXIX., the departure from the average of each year’s ten 
perature will be shown, divided into two groups of warm and col 
and are as follows :— 
Warm Years 
O 
Cold Years 
o 
In 1826 too high 
by 1*5 
In 1829 
too low by 2‘0 
„ 1827 
11 
„ 1836 
„ 0*5 
„ 1828 
2-3 
„ 1837 
1-1 
„ 1830 
o-i 
1838 
,. 2-1 
00 
oo 
2-2 
„ 1840 
1*0 
„ 1832 
0-2 
„ 1841 
o-l 
1833 
0'5 
„ 1844 
04 
„ 1834 
2-3 
l O 
OO 
1-8 
„ 1835 
0-7 
„ 1847 
0-2 
„ 1842 
0-7 
„ 1850 
0-9 
„ 1843 
0-4 
„ 1851 
0-2 
„ 1846 
1-8 
, 1853 
1*8 
„ 1848 
0-2 
1854 
0-6 
5-8 , 
, 1869 
„ 10-6 . 
. 18- 
6-1 , 
, 1830 
„ 5-6 , 
, 18i 
4-6 , 
, 1865 
,. 6-1 . 
. 18; 
6*6 , 
, 1833 
n 4-9 , 
, 18; 
'• 
6-3 , 
, 1846 
„ 52 , 
. 18i. 
5-6 , 
, 1868 
„ 4*5 , 
, 18< 
5-0 , 
, 1842 
„ 4-0 , 
, 18(j 
» 
5-1 , 
, 1865 
„ 4;3 , 
, 18* 
,18. 
6-5 , 
, 1831 
„ 5-0 , 
' 
-1 
5-8 , 
, 1852 
5-6 , 
. 18. 
7-2 „ 
, 1852 
„ 7'6 , 
. 18 
