ON SOLAE PHYSICS. 
23 
Table II. — Showing the areas of all Sun-spots observed at the Kew Observatory from 
February 7th, 1862 to December 31st, 1863. 
The areas are expressed in millionths of the Sun’s visible hemisphere. 
Date. 
Group. 
Mean 
distance from 
centre, 
radius=l. 
Area of 
Penumbra. 
Area of 
Umbra. 
Area of 
whole Spot. 
Whole for the day. 
Penumbra. 
Umbra. 
Whole Spot. 
1862. 
Feb. 7- 
226 
0-850 
64 
16 
80 
227 
0-793 
35 
0 
35 
228 
0-705 
78 
12 
90 
229 
0-525 
25 
5 
30 
230 
0-524 
30 
10 
40 
231 
0-345 
18 
0 
18 
232 
0-890 
469 
38 
507 
233 
0-905 
221 
0 
221 
940 
81 
1021 
8. 
226 
0-934 
71 
0 
71 
227 
0-880 
9 
0 
9 
| 
228 
0-825 
60 
0 
60 
229 
0*655 
34 
23 
56 
230 
0-634 
38 
0 
38 
232 
0-770 
232 
33 
265 
233 
0-865 
290 
17 
307 
734 
73 
806 
10. 
229 
0-911 
147 
31 
178 
230 
0-810 
72 
29 
101 
232 
0-485 
513 
100 
613 
233 
0-586 
208 
82 
290 
234 
0-949 
345 
55 
400 
235 | 
0-775 
15 
12 
27 
0-775 
34 
20 
54 
1334 
329 
1663 
16. 
232 L 
0-902 
486 
165 
651 
233 
0-772 
169 
0 
169 
234 
0-288 
71 
18 
89 
236 
0-263 
26 
0 
26 
237 
0-474 
53 
0 
53 
238 
0-747 
274 
0 
274 
239 
0-234 
53 
0 
53 
1132 
183 
1315 
20. 
234 
0-902 
282 
29 
311 
239 
0-857 
45 
21 
66 
240 
0-910 
178 
42 
220 
241 
0-304 
18 
0 
18 
523 
92 
615 
21. 
234 
0-971 
319 
53 
372 
239 
0-936 
71 
24 
95 
240 
0-807 
174 
36 
210 
241 
0-710 
0 
6 
6 
242 
0-690 
106 
36 
142 
670 
155 
825 
28. 
240 
0-686 
129 
41 
170 
242 
0-852 
330 
297 
627 
243 
0-652 
175 
119 
294 
244 
0-252 
159 
0 
159 
245 
0-345 
154 
68 
222 
247 
0-730 
119 
94 
212 
248 
0-947 
131 
65 
196 
1197 
684 | 
1880 
Mar. 1. 
240 
0-822 
119 
52 
171 
242 
0-940 
324 
349 
673 
243 
0-537 
234 
61 
295 
244 
0-062 
94 
34 
128 
245 
0-160 
181 
82 
263 
247 
0-619 
86 
27 
114 
248 
0-870 
88 
44 
132 
1126 
649 
1776 j 
