Wolf, MitlbeiluDgcn über die Sonnenflecken. [(7 



that 1 was led to apprehend this connection by percei- 

 ving- a resseinblance in epoch between Schwabe's ob- 

 servations of tlie sun spots , and Lamonts remark an the 

 inequaUtij ichich he had found i7i the solar-diurnal Variation 

 of the Declin.ition. 1 inferred the connection from the 

 resseinblance in epoch between Schwabe's sun spots, 

 and the inequalitys in frequenty and amount of the distup- 

 bances. 11 is quite true that I perceived that there was 

 a corresponding- ineqiiaiity in the diiirnal variations of 

 the declination, inclination and total force. But the con- 

 nection of the magnetic phenomena of the earth with 

 the solar spots was known to me by the investigation 

 of the disturbancen , wholly independently and irrespec- 

 tive of the diumal Variation of any the three Clements which 

 were siniply to me confirmutory. You will see by the 

 ^'^ vol. of the Hobarton observations p. XLIX that in 

 the same month of March 1852 1 was quite cognised of 

 the inequality in the diurnal Variation of the three ele- 

 ments, but 1 had pieviously became aver of the connec- 

 tion with the solar spots by the irregularity in the distur- 

 bance-variation and as far as 1 know, 1 am the only 

 person even now who have so far investigated those 

 reniarkable phenomena." — Ich glaube annehmen zu 

 dürfen, dass durch das Mitgetheilte alle Missverständ- 



veranlasstenund daher (trotz einer GegenbcmerkungLamont's I.e.) 

 gerade in diesem Momente sehr wUnschenswer- 

 t h e n Nachweise des wirklichen Bestehens der Sonnenflecken- 

 periode und ihrer genauem Fixirung bestehe. Auf diese Ar- 

 beil und einige seither auf sie gebaute Untersucliungen thue 

 ich mir in der That etwas zu gut , — das niuss ich bekennen. 

 8) Die Untersuchungen Herrn Gautier's sind in dem Juli- 

 und Augusthefle der Bibliolheque universelle de Gencve abge- 

 druckt das genauere Datum seines Vortrages kenne ich nicht. 



