Three Prints from a Photograph of a Solar Prominence. 



Taken by Prof. Geokoe E. Hale, on the 2otli of May, 1892, with liis ."pectro-Ueliograph. at tlie Kenwood Astro-Physical Ob.^ervatory, Chicago. 

 The upper right hand print is on the scale of the original negative. The upper left liand print is a positive copy reversed right and left. 



Monochromatic Photograph of the Sun. showing Spots and Faculs. 



