COUNCIL EOR 1870 . 
15 
METEOROLOaiOAL EEOTSTEE, YOEK, 1870. 
BAROMETER. 
RAIN. 
THERMOMETER. 
nigbest. 
Lowest. 
1 
Mean. 
Inches. 
Days. 
Average Mx. 
1 Average Mm. 
HighestTemp. 
Lowest Do. 
Mean Do. 
! 
Jan. 
30-56 
28-57 
29-774 
1-68 
19 
41-0 
32-2 
49 
22 
36-6 
Feb. 
30-40 
29-10 
29-707 
1-92 
19 
40-4 
30-6 
54 
14-5 
35-5 
Mar. 
30-50 
29-30 
29-915 
1-80 
13 
46-2 
34-6 
55 
26 
40-4 
April 
30-50 
29-42 
29-864 
0-66 
6 
58-4 
40-9 
75 
33 
49-6 
May 
30-40 
29-23 
29-966 
1-13 
9 
63-9 
47-4 
76 
34 
55-6 
June 
30-59 
29-62 
30-009 
2-78 
12 
68-3 
52-6 
78 
44 
60-4 
July 
30-26 
29-61 
29-874 
0-51 
5 
70-5 
54-3 
82 
48 
62-7 
Aug. 
30-38 
29-26 
29-907 
1-58 
8 
72-0 
56-6 
79 
43-5 
61-3 
Sept. 
30-53 
29-17 
29-937 
1-18 
14 
62-1 
46-4 
71 
32-5 
53-7 
Oct. 
30-65 
28-65 
29-553 
6-10 
18 
53-3 
41-3 
63 
31 
47-0 
Nov. 
30-50 
29-95 
29-667 
1-92 
21 
43-6 
34-2 
52 
24 
38-5 
Dec. 
30-63 
28-97 
29-705 
3-17 
19 
38-1 
29-7 
51 
11 
34-7 
30-65 
28-57 
29-823 
24-40 
163 
54-8 
41-7 
82 
11-0 
48-0 
Observatory. —Transits have been taken with sufficient 
frequency to keep accurate time. The numerous groups of 
solar spots, some of them of large dimensions, were observed 
at every transit of the Sun throughout the year. In the 
month of April, Mr. Monkhouse kindly made the attempt 
to take Photographs of them, but the confined space of the 
equatorial room, and the want of special arrangements, pre¬ 
sented obstacles to success. The coincidence of these solar 
disturbances, with the frequency of Auroral displays, has 
occasioned much interest, having been predicted from the 
ascertained periodicity of the maximum and minimum times of 
the occurrence of the Solar spots. 
Library. —In the Departments of the Library, the im¬ 
proved arrangement mentioned in the last year’s Eeport has 
been- found to work very satisfactorily. The new Catalogues 
corresponding to it are now nearly completed, including a 
