PHILOSOPHICAL 
TRANSACTIONS 
OF THE 
KOYAL SOCIETY OE LON DOW. 
Series A 
CONTAINING I’APEES OF A MATHEMATICAL OK PHYSICAL CHAKACTEK. 
VOL. 198 
LONDON; 
PRINTED BY HARRISON AND SONS, ST. MARTTN’s LANE, W.C., 
printers in ^rbiuHrj) to ^is Itlsjestg. 
May, 1902. 
