.14 
BRITISH 
MUSEUM 
25 MAR 22 
NATURAL 
HISTORY. 
PHILOSOPHICAL TRANSACTIONS 
OF THE 
ROYAL SOCIETY OE LONDON. 
Series A, Vol. 222. Pp. 131-166. 
I, THE ANALYSIS OF SOUND. 
Part I.-THE EXPERIMENTAL ANALYSIS OF SOUND IN AIR AND WATER: 
I SOME EXPERIMENTS TOWARDS A SOUND SPECTRUM. 
BY 
GUY BARLOW, D.Sc. (Wales, Lond., Birm.), F.Inst.P., 
LECTURER IN' PHYSICS IN THE UNIVERSITY OF BIRMINGHAM, 
AND 
By /A H. B. KEENE, D.Sc. (Birm.), F.Inst.P., 
LECTURER IN PHYSICS IN THE UNIVERSITY OF BIRMINGHAM. 
PART II-THE THEORY OF ANALYSIS OE AN ELECTRIC CURRENT BY PERIODIC 
!> INTERRUPTION. 
BY 
G. BARLOW, D.Sc. 
Printed and Published for the ROYAL SOCIETY by 
HARRISON AND SONS, Ltd., 44-47, ST. MARTIN’S LANE, LONDON, W.C. 2. 
^Printers, tit «9rtftnarg to ffisi Mxiedty. 
1922. 
Price Three Shillings. 
A 598. 
21 . 2.22 
