IOWA ACADEMY OF SCIENCES. 



89 



NUMBER 



OF 



OBSERVING 



DAYS. 



AVERAGE NUMBER 

 OF — 



o 



c/) 



AVERAGE 



NUMBER OF 



GROUPS IN— 



i-i 3 

 O *J 



n Fi 



a rt 

 ;2i 



1894— October . . 

 November 

 December. 



1895— January. . . 

 February . 



March 



April ...,., 

 May 



June 



July 



August . . . 



September 



October . . . 



November. 



December . 

 1896 — January. . . 



February . 



March .... 



April 



May 



June 



July. ... 



August . . . . 



September 



October . . . 



November . 



December. 

 1897 — January . . . 



February 

 March . . . 



April 



May 



June 



July 



August . . . 

 September 

 October . . 

 November . 

 December . 

 1898-January... 

 February . 



March 



April 



May 



June 



30 



19 



12 



7 



1 



6 

 11 

 13 



5 



7 

 10 



[b. a. a.] 



* 



22 

 19 

 20 

 16 

 17 



9 

 18 

 16 

 17 

 18 

 16 

 23 

 20 

 17 

 21 

 12 

 10 

 10 

 [b a. a.] 

 3* 

 14 



6 

 22 

 20 

 26 

 28 

 28 

 14 

 16 

 11 

 18 

 20 

 23 

 25 

 18 

 24 



4.6 

 4.4 

 5 

 4.2 

 5.3 

 5.4 

 6.6 

 6.0 

 5.6 

 baa. 

 4.0 

 4.7 

 5.1 

 4.6 

 3 9 

 6.3 

 3 2 

 3.8 

 3.7 

 3.7 

 2.3 

 3.0 

 3.8 

 2.2 

 2.9 

 2.9 

 3.6 

 4.0 

 2.9 



2.7 

 2.6 

 2.5 

 1.6 

 1.1 

 2.8 

 2.1 

 3.8 

 1.3 

 1.2 

 2.5 

 2.6 

 2.4 

 2.6 

 1.5 

 2.4 

 2.2 



34.5 

 16.6 

 28 



23^6 

 25.7 

 32.8 

 34.9 

 43.1 



43.9 

 22.3 

 35.5 

 16.2 

 27.1 

 8.5 

 24 

 14.8 

 21.8 

 10 7 

 23.1 

 15.1 

 10.7 

 31.2 

 12.9 

 16.0 

 24.7 

 28.7 



9.9 

 7.5 

 7.7 

 4.8 



11.3 

 9.5 



22 2 

 3.3 

 3.8 



12 6 

 9 3 



16 5 



15.0 

 6.7 



13.3 

 9.5 



3.6 

 2.8 

 4.0 

 4.2 

 3.5 

 4.0 

 4.8 

 4.1 

 3.6 



2.9 

 2.8 

 3.3 

 2.9 

 2.9 

 3.2 



2.6 

 3.3 

 2.6 

 3.2 

 3.6 

 3.4 



2.5 

 2.7 

 2.3 

 1.4 

 1.8 

 2.3 

 2.8 

 2.3 

 1.3 

 2.4 

 2.7 

 2.0 

 2.4 

 2.2 

 2.8 

 2.5 



♦Note — Owing to absence from town during the greater portion of July, 1898, and 

 July, 1898, and insufficiency of observations in Febru^ary, 1897, and July, 1S98, a part of 

 the data given is supplied from the British Astronomical Association solar section reports. 

 7 I AS 



