348 
DR. EVERETT ON ATMOSPHERIC ELECTRICITY. 
1 
A 
pril. 
May. 
June. 
July. 
August. 
Total 
No. of 
Mean of 
monthly 
No. 
No. 
No. 
No. 
No. 
Gross 
of 
Mean. 
of 
Mean. 
of 
Mean. 
of 
Mean. 
of 
Mean. 
obs. 
mean. 
means. , 
obs. 
obs. 
obs. 
obs. 
obs. 
5 to 
7 A.M. 
... 
1 
17*2 
1 
17*2 
17-2 
1 7 to 
8 
6 
23-9 
5 
18-9 
9 
23-4 
2 
49-4 
2 
21-5 
24 
24-6 
27-4 
8 to 
9 
12 
32-1 
18 
26-3 
14 
20-3 
14 
26-4 
3 
28*7 
61 
26-2 
26-8 
9 to 
10 
1 
28-8 
3 
25-9 
2 
23*0 
2 
31-6 
8 
27-0 
27-3 
10 to 
11 
... 
1 
33-6 
1 
33-6 
33-6 
1 11 to 
12 
12 to 
1 P.M. 
1 to 
2 
16 
28-5 
21 
24-9 
18 
22*3 
11 
23-3 
1 
13-4 
67 
24-6 
22-5 
2 to 
3 
4 
20-0 
5 
28-5 
5 
33-0 
10 
21*8 
3 
27-3 
27 
25-5 
26*1 
3 to 
4 
1 
32-2 
3 
19-2 
1 
21-7 
5 
22*3 
24-4 
4 to 
5 
"2 
45-8 
1 
13-0 
3 
34-8 
29-4 
5 to 
6 
6 to 
7 
7 to 
8 
8 to 
9 
9 to 
10 
12 
19-2 
14 
20*3 
11 
10-9 
8 
14-4 
45 
16-7 
16-2 
10 to 
11 
7 
23-5 
10 
25-3 
16 
17-5 
12 
10-0 
4 
15-3 
49 
17*9 
18-3 
11 to 
12 
1 
18-9 
2 
21*7 
1 
1-4 
1 
84-7 
5 
29-7 
31-7 
In the following Table, which includes the whole of my fine-weather observations from 
the beginning, all observations, whether actually taken with first, second, or third fibre, 
are reduced to units of second fibre, that being the unit adopted in my previous papers. 
Although the numbers for the first seventeen months have already been published in 
the Proceedings, it seems desirable to reproduce them, in order to show the connexion 
of the whole series. 
Mean of 
observa- 
tions before 
noon. 
Mean of 
observa- 
tions from 
noon to 
6 r.M. 
Mean of 
observa- 
tions after 
6 P.M. 
Mean of 
three pre- 
ceding 
columns. 
Mean of 
observa- 
tions before 
noon. 
Mean of 
observa- 
tions from 
noon to 
6 P.M. 
Mean of 
observa- 
tions after 
6 P.M. 
Mean of 
three pre- 
ceding 
columns. 
1862. 
October ... 
3-42 
3*68 
2-69 
3*26 
1863. 
October ... 
5-24 
4-16 
2-74 
4-05 
November 
3-53 
2-89 
2*58 
3-00 
November 
4-24 
4-13 
2*82 
3-72 
December 
4-09 
5-01 
2-77 
3*96 
December 
4-51 
5-14 
3-39 
4-35 
1863. 
January ... 
4-11 
4-88 
3-42 
4-14 
1864. 
January ... 
3-86 
5*74 
3-63 
4-41 
February 
6-10 
5-77 
4-96 
5-61 
February* 
4*78 
4*97 
3-16 
4-30 
March 
6-28 
5-10 
5-02 
5-47 1 
March . . . 
5-88 
6-72 
4-05 
5-55 
April 
4*41 
4-37 
3-26 
4-01 
April 
4-60 
4-24 
3'24 
4*02 
May ...... 
2-98 
3*54 
2-85 
3-12 
May 
3-88 
4-22 
3-49 
3-86 
June 
2-91 
3*02 
2-52 
2-82 
June 
3-39 
3-75 
2-24 
3-13 
July 
3-17 
3-20 
2-50 
2-96 
July 
4*55 
3-46 
2-39 
3-47 
August ... 
3-98 
4-01 
3-20 
3*73 
August . . . 
4-04 
3-72 
2-39 
3-38 
September 
3-98 
4-41 
3-18 
3-86 
A portion of the apparatus employed in the observations of atmospheric electricity 
at Kew Observatory was erected in January 1861, but the observations which have been 
* Observations on two days in February 1864 were out of range and have not been included; hence the 
values here given are too low. 
