em eee aie Ears ae haa ee eee) SE See SRS pe eee ee ee Ee Te ee rN 
IP ne ee 2 
Researches on Solar Physics. 183 
in continuous operation at Kew, under Mr. De la Rue’s superin- 
tendence. It is right to mention that for the perfection of these 
Pictures much credit is due to the late Mr. Welsh and to. Mr, 
eckley, under whose immediate supervision the pictures at 
Kew have been taken by a qualified assistant, Miss Beckley. 
§ IV. Method of reduction. 
