150 



IOWA ACADEMY OF SCIENCES. 



second exposure plate exhibited the inner corona fairly- 

 well, also the large prominences on the west and a smaller 

 one on the east limb. The 5-second exposure was quite 

 good and shows the extensions of the Corona to a distance 

 of about twice the sun's diameter on each side of the sun's 

 equator; the polar streamers are also fairly well seen. The 

 Corona on the east side of the sun extended outward 

 nearly in line with the solar equator, in a long, cone- 

 shaped extension with short spurs at each side of its base; 

 the western streamer was in the form of a broad "fish tail" 

 with curved or wing-like brighter extensions on its north- 

 west and southwest sides. 



SKETCH OF THE CORONA AFTER TOTALITY. 



Shortly after totality was over a number of observers in 

 our party sketched their impressions of the outline of the 

 Corona from memory, and in general there was a close 

 agreement between them, except as to the direction of the 



j^ 







Figure 8. Sketch of Corona made from a series of photographs. 



