C. H. F. Peters 
188 
Dr. Peters’ notes include, beside the statement of the weather conditions, references to Wilson’s theory of the 
depression of sun-spots. A total of 172 spots are mentioned in this connection, of which 141 favor Wilson’s theory, 
and 31 are opposed to it. To make these observations available for any possible discussion on this point, the dates 
are here given, with the letter identifying the spot. 
Spots Favoring Wilson’s Theory 
i860 June 15, h and h' 
Oct. 1, a 
April 13, d and d 5 
Oct. 1, d 
June 16, i 
Nov. 1, b 
23 , g 
29, a 
20, h and k 
20, d 
24, a 
1869 Mar. 1, a 
July 4, a and b 
Dec. 5, h 
May 5, a' 
17, e 
6, a 
13 , h 
9, g 
April 18, e 
8, b 
i 5 , a 
J ul y 5, /' 
25 , d 
15 , / 
1862 Jan. 24, a 
Aug. 7, a 
May 10, i 
20, h 
Feb. 7, a 
1864 
Dec. 9, a 
20, d 
22, m 
8, a 
1865 
Feb. 12, c 4 
24 , d 
24, 0 
n, / 
24, a 
3h b 
July 30, a and e 
Mar. 19, b 
May 15, a 
June 1, a 
Aug. 16, g 
April 25, a 
26, a and b 
12, b 
20, a 
May 8, e 
1866 
Jan. 3, c 
July 18, h 
Sept. 15, / 
n, / 
Mar. 3, b 
Aug. 24, a 
30, b and h 
J 5 , h 
May 20, b 
Sept. 13, b 
Oct. 15, e 
28, / 
June 28, c 
20, c 
Nov. 25, b 
June 5, b 
Sept. 30, a 
Oct. 6 , c 
1861 Feb. 25, i 
22, k 3 
Oct. 1, a 
16, a 
April 25, m and n 
26, a 
28, a 
21, / 
27, ? 
July 11, e 
1867 
July 4, a 
Nov. 13, h 
Ma y 5 , g 
19, a 
Oct. 18, a 
Dec. 9, b and c 
7, d 
27, a 
Dec. 1 , d 
1870 Jan. 28, b 
June 7, a 
Aug. 8, a 
1868 
Mar. 5, a 
Mar. 14, a 
13, g 
22, a and b 
April 8, a 
April 3, d 
22, d 
24 , / 
22, b 
9, a 
29, d , d r 
Sept. 17, a 
June 8, c 
13 , b 
July 5, b 
25, b 
July 2, a 
23, a 
7 , « 
Dec. 12, e 
3, a 
30, 0, b , c, e 
11, h 
1863 Jan. 18, d 
28, a 
Aug. 26, a 
Sept 15, a 
May 13, m and 0 
27, e 
Aug. 1, c 
3 1 ) a 
Feb. 18, e and g 
Total 141 
Sept. 29, c 
April 3, a 
29, / 
Spots Opposing Wilson’s Theory 
i860 Aug. 6, c and n 
Dec. 12, g 
July 3 T / 
1865 Mar. 11, a 
Oct. 31, / 3 
1862 Jan. 14, g 
Aug. 18, e 
1868 May 3, b 
1861 Jan. 5, / 
April 12, a 
Sept. 15, d and e 
1869 June 1, g 
April 5, b 
J 3 , a 
25, g 
Sept. 24, d 
27, a 
25, / 
Oct. 28, i 
1870 May 30, b 
June 29, / 
June 8, b 
1863 Feb. 21, b 
Total 31 
Nov. 1, / 
Dec. 2, g 
20, g 
July 10, d 
Mar. 13, a 
May 8, a 
Aside from the references to Wilson’s theory, the notes contain one other item which perhaps ought to be recorded, 
viz., July 5, 1868: Spot a. “A notch on the sun’s limb formed by the elevation of photospheric matter. The sun’s 
limb very sharply defined.” 
