h'lioirledi/c. 



ARTIFICIAL AND NATURAL FACUL^. 



A. -Artificial raculfp with part of Overhanging Pulp removed, 

 showing an Ordinary Spot. 



D. — FaculiB taken witli Prof. Hale's Speetro-heliograph, at Kenwood 

 Ohservatorv, July lltli. 1893, at 10 a.m. 





.^4 



B. -Large Patoli of Artificial Faculae. 



E.— Faculic taken on Julv 13ch, 1893, at s a.m. 



C.— Tlie same as li, but with part uncovered, showing Spot belo 



F.— Faculn? taken August 7th, 1893, at : 



