394 
MESSRS. J. B LAWES AND J. H. GILBERT OX THE RESULTS OF 
Table XXX.—Abstract of meteorological conditions of 1868-9, the year 
comparison of each with the average of 20 
Monthly. 
July. 
August. 
Septem¬ 
ber. 
October. 
Novem¬ 
ber. 
December. 
January. 
February. 
Rainfall at Rothamsted.—Inches. 
Average 20 years, 1855-6-1874-5 
2-46 
2-49 
2-51 
3-07 
1-99 
2-04 
2-79 
1*57 
1868-1869 
0-37 
3-77 
2-80 
2-04 
0-42 
4’55 
3-44 
2-41 
1869-1870 
0-97 
1-35 
2-79 
2-05 
2-38 
3-20 
1-81 
2T0 
1868-9 + or — average of 20 years 
-2-09 
+ 1-28 
+ 0-29 
-1-03 
-1-57 
+ 2-51 
+ 0 - 65 
+ 0-84 
1869-70 + or — average of 20 years 
-1-49 
-1-14 
+ 0-28 
-1-02 
+ 0-39 
+ 1-16 
-0-98 
+ 0-53 
1869-70 + or - 1868-9 
+ 0-60 
— 2*42 
-o-oi 
+ 0-01 
+ 1-96 
-1-35 
-1-63 
-0-31 
Rainfall at Rothamsted.—Number 
oi' Days when 0 - 01 
INCH, OR MORE, FELL. 
Average 20 years, 1855-6-1874-5 
12 
13 
13 
16 
14 
14 
16 
12 
1868-1869 
4 
15 
9 
11 
8 
22 
14 
16 
1869-1870 
6 
11 
12 
17 
12 
18 
17 
21 
1868-9 + or — average of 20 years 
-8 
+ 2 
-4 
-5 
-6 
+ 8 
-2 
+ 4 
1869-70 + or — average of 20 years 
-6 
-2 
-1 
+ 1 
-2 
+ 4 
+ 1 
+ 9 
1869-70 + or - 1868-9 
+ 2 
-4 
+ 3 
+ 6 
+ 4 
-4 
+ 3 
+ 5 
Mean Maximum Temperature at Greenwich (Fahrenheit). 
Average 20 years, 1855-6-1874-5 
75-2 
73'5 
67-9 
59-0 
48-3 
44-4 
43-8 
46-1 
1868-1869 
82-0 
75-1 
717 
56-9 
46-9 
50-5 
46-0 
51-8 
1869-1870 
77-0 
72-3 
68-6 
57-5 
49-1 
42-0 
42-6 
41-4 
1868-9 + or — average of 20 years 
+ 6-8 
+ 1-6 
+ 3-8 
-2-1 
— 1*4 
+ 6-1 
+ 2-2 
+ 5-7 
1869-70 + or — average of 20 years 
+ 1-8 
-1-2 
+ 0-7 
-1-5 
+ 0-8 
-2-4 
-1-2 
- 4-7 
1869-70 + or - 1868-9 
-5-0 
-2-8 
-31 
+ 0-6 
+ 2-2 
-8-5 
-3-4 
-10-4 
Mean 
Minimum 
Temperature at Greenwich (Fahrenheit). 
Average 20 years, 1855-6-1874-5 
53-2 
53-0 
49'4 
44'1 
36-7 
35-0 
34-0 
34-7 
1868-1869 
55-7 
55-0 
51-1 
40-2 
36-1 
41T 
36-5 
39-7 
1869-1870 
54’5 
52-4 
52-4 
42’0 
37-4 
33-4 
34-0 
31-9 
1868-9 + or — average of 20 years 
+ 2-5 
+ 2'0 
+ 1-7 
-3-9 
-0-6 
+ 61 
+ 2'5 
+ 5-0 
1869-70 + or — average of 20 years 
+ 1-3 
-0-6 
+ 3-0 
-21 
+ 0-7 
-1-6 
o-o 
-2-8 
1869-70 + or - 1868-9 
-1-2 
-2-6 
+ T3 
+ 1-8 
+ 1-3 
- 7 - 7 
-2-5 
-7-8 
Mean Temperature at Greenwich (Fahrenheit). 
Average 20 years, 1855-6-1874-5 
62 : 6 
61-7 
57-4 
50-6 
42-2 
39-8 
38-8 
39-8 
1868-1869 
67'5 
63-6 
60-5 
47-9 
41-5 
46-0 
41T 
45-3 
1869-1870 
64-5 
60-8 
59-0 
48'9 
43-0 
37-9 
38-3 
36-2 
1868-9 + or — average of 20 years 
+ 4-9 
+ D9 
+ 3-1 
-2-7 
-0-7 
+ 6-2 
+ 2-3 
+ 5‘5 
1869-70 + or — average of 20 years 
+ 1-9 
-0-9 
+ 1-6 
-1-7 
+ 0-8 
-1-9 
— 0*5 
-3'6 
1869-70 + or - 1868-9 
— 3 ! 0 
-2-8 
-1-5 
+ 1-0 
+1*5 
-8-1 
-2-8 
— 9T 
Mean Range of 
Temperature at Greenwich (Fahrenheit). 
Average 20 years, 1855-6-1874-5 
22'0 
20'5 
18-5 
14 : 9 
11-8 
9-6 
9-6 
11-4 
1868-1869 
26-3 
20-1 
20-6 
16 ! 7 
10-8 
9-4 
9-5 
121 
1869-1870 
22-5 
19-9 
16-2 
15-5 
11'7 
8-6 
8-6 
9*5 
1868-9 + or — average of 20 years 
+ 4-3 
-0-4 
+ 2-1 
+ 1-8 
-l-o 
-0-2 
-0T 
+ 0-7 
1869-70 + or — average of 20 years 
+ 0'5 
-0-6 
-2-3 
+ 0-6 
-0T 
-no 
-1-0 
-1-9 
1 869-70 + or - 1868-9 
-3-8 
-0-2 
-4-4 
-1-2 
+ 0-9 
-0-8 
-0-9 
-2-6 
