PHILOSOPHICAL TRANSACTIONS 
OF THE 
ROYAL SOCIETY OF LONDON. 
Series A, Vol. 218. Pp. 351-372. 
[Plate 2.] 
:he ultra-yiolet band of ammonia, and its occurrence 
IN THE SOLAR SPECTRUM. 
BY 
A. FOWLER, F.R.S., 
PROFESSOR of astrophysics, 
AND 
C. C. L. GREGORY, B.A., 
RESEARCH STUDENT, IMPERIAL COLLEGE, SOUTH KENSINGTON. 
A 566. 
Printed and Published for the ROYAL SOCIETY by 
HARRISON AND SONS, 44-47, ST. MARTIN’S LANE, LONDON, W.C. 2, 
grtnterg in ©rtrtnarj) tn fHajetftj). 
1919. 
Price Three, Shillings, 
5.6.19 
