Smithsonian Report, 1904.— Hale and Ellerman. 



Plate 111. 



Fig. 2.— H and K Lines in Electric Arc, Showing 

 Reversals. 



Fig. 1.— K Line on the Disk 

 AND AT the Limb. 



Fig. 3.— Minute Calcium Flocculi (Hj). 



The squares are 10 inches on a side. 



