.1 NEW METHOD OF RESEARCH. 



2 3 



the comparatively small width of the hydrogen lines, that it will become 

 possible to secure photographs corresponding to different elevations, 



E 



Fig. 10.— 3h 57 m . Calcium Flocculi, K„ Level. Slit at A 3933 8. 



W 



Fig. 11.— Hh om. Hydrogen Flocculi. Slit at Center of Hy. (Bright 

 Eruptive Flocculi West of Spot.) 

 Hydrogen and Calcium Flocculi, 1903, July 7. 

 (Scale: Sun's Diameter's = 0.290 Meter. ) 



just as has been done for calcium with the broad H and K bands. 

 This would permit the lower regions to be differentiated from the 



