326 Researches on Solar Physics. 
Table exhibiting ws area of the non-rejected groups for the afere sf tie ia longi- 
des of the visible disk (longitude of Earth = 
Average of a f the hemi- 
pbc area at ft the idee rain — 
og aay 
eae eee ; of Venu 
—62° —48° —34°|—20° —6°, +8° +22°|+-36° +50° 164° 
| 
No. of pao 4 
‘Longitude 
: of 
series. of se i 
1/1854, Mar. 5) 81/ 90/113 |155 229271311 /380 eo 366 + 10 | +120 
pa fa 50 
V.j1856, Aug. 24) 73! 78) 76 
VI.1857, Mar. 15) 88 25 j1 |206 |211/187 158| — 30 160 
VIL. ug. 16111 /102 107 |106 |120/128/108 |120 130/185; + 70 | + 80 
VUL Nov. 7 94/104 |124 |182|121/110)108| 97} 88; 81) -+-140 | — 10 
TX. 1858, Feb. 1351 378 |394 |389 ee 405 |874 825 261| +160 | — 80 
x Apr. 26141 192 240 3/367/365 |361 |304 211; —120 140 
x July 17111118 147 a 199/224 |238 |261 |264| — 90 | +120 
Xi Nov. 3231 255 /288 /316 |330/337/349 [370/394 418; — 40 | + 30 
XIIL/1859, Mar. | : indO M899 lox |BBSSTRlae1 22/15 & go t= % 
XIV. June 22/145 |136 128/118 107/100 45| +130 | +170 
XV. Aug. 6342/8538 372/405 426/429/414 |415 413 |410| +150 | +150 
XV Nov. 11175 /183 195 |203 |213/2 223 213 205; —160 | + 60 
XVITI_/1860, Feb. 24/123 140 157 |168 |182/200195 |180/173 161} — 90 40 
III May 16 100 shee 141 oo 175/185 181 |186/184 180; — 30 | —110 
; July 2313 326 321 /306 |284/271/272 aries 241 10 ; —160 
XX. Oct. 12.210 296 264 [963 255|261/243 221 214/191 ef 60 | +110 
46. In the second place, there seems to be a periodical sa 
rence of the same sort of behavior. Thus in series I, IV, V 
(XI and XII), xvi, there is a maximum considerably to the 
right. The mean dates of these series are :— 
March, 1854 .... 
Ww —, T6583: f: ee ‘ Viiv iis months. 
Me dewey hevees ¢ 75 servi eie 
XI and XII, July to Nov. 1858 e+ an ewok Eg hl GE 
XVIII, May, 1860 ...... I=(XI and XIT}+-20 
Mean period, 185 * 
Also in series 11, (after Iv), VIII, (x11 and xrv), (XIx and XX), 
bere is a maximum considerably to the left. The dates of these 
Il, May, 1854........ 
after IV, (cay), Dee. 1855 See aes mos. 
VIL, Noy hed 1857. ety es i Vt23 “ 
(XT and XIV), M Me Via (XLT and vey 
ae (XIX & XX)=(XIM& XIV)+15 “ 
(XIX and XX), July rome gra 
a Heath pedals 07 
Again, i in series III, V, (Ix and X), (Xv, oes as rie the 
maximum is not far from. the center. The dat 
ot! November, 1854 ae 
eee ee Eh Se be ee eo ee ew ee be oe eS +21 mos. 
bef. - aye . 
(XV, XVI, ‘Wied, x)+20 * 
_ pril, 1858 
(XV, RV VI) ‘ng. 159 to | 
Mean period, 20 “ 
