PHILOSOPHICAL TRANSACTIONS 
OF THE 
ROYAL SOCIETY OF LONDON. 
Series A/ Yol. 216. Pp. 187-277. 
DISCUSSION OF KEW MAGNETIC DATA, ESPECIALLY THE 
! DIURNAL INEQUALITIES OP HORIZONTAL FORCE AND 
j VERTICAL FORCE, FROM ORDINARY DAYS OF THE 
I ELEVEN YEARS 1890 TO 1900. 
1 
BY 
C. CHREE, Sc.D., LL.D., F.R.S., 
SUPERINTENDENT, KEW OBSERVATORY. 
LONDON: 
PUBLISHED BY THE ROYAL SOCIETY, 
AND SOLD BY HARRISON AND SONS, ST. MARTIN’S LANE, W.C., 
Printers tn dhrUtnarp tn S|t£ fHajcsJtg. 
1916. 
A 542. 
Price Five Shillings. 
28.3.16 
