PROFESSOR A. SCHUSTER ON THE PERIODICITIES OF SUNSPOTS. 
99 
Table YI.— Intensity of Periodogram for Periods of 2 '240 years to 55 days. 
Period. 
I 
Intensity. 
1 
Mean 
intensity. 
Period. 
Intensity. 
Mean 
intensity. 
Period. 
| 
Intensity. 
| Mean 
intensity. 
Years. 
Years. 
Days. 
2-240 
87 
310 x10 2 
1-120 
81 
137 x10 2 
136 
523 
163 x10 2 
72 
24 
12 
1059 
432 
34 
30 
10 
16 
2-090 
53 
290 
1-045 
29 
198 
366 
17 
44 
27 
832 
499 
116 
27 
45 
257 
Days. 
218 
(Mercury) 
19 
1-941 
17 
230 
354-5 
11 
181 
142 
194 
343 
6 
583 
204 
42 
127 
168 
32 
1-792 
106 
131 
327-24 
423 
367 
109 
366 
116 
221 
561 
27 
160 
291 
108 
38 
192 
6 
1-642 
113 
204 
299-97 
409 
188 
99 
99 
154 
90 
141 
65 
68 
172 
90 
463 
124 
15 
1-599 
297 
240 
291-92 
109 
42 
106 
(Venus) 
171 
26 
10 
27 
2 
138 
464 
33 
93 
1-568 
159 
132 
286•33 
2 
63 
58 
192 
81 
127 
117 
12 
60 
103 
130 
180 
32 
19 
1-493 
48 
120 
272-7 
8 
167 
0 
205 
291 
129 
91 
338 
55 
1006 
181 
138 
33 
1 
1 • 344 
359 
185 
245-4 
124 
147 
12 
7 
96 
15 
304 
309 
42 
• 
69 
58 
10 
1-195 
355 
199 
218-16 
7 
179 
45 
126 
175 
579 
1 
223 
6 
1 
o 
•7 
