CAMBRIDGE UNIVERSITY PRESS 
LONDON : FETTER LANE, E.C. 4 
H. K. LEWIS & CO., LTD., 1 3 6 , GOWER STREET, LONDON, W.C. 1 
WHELDON & WESLEY, LTD., 2 - 4 , ARTHUR STREET, NEW OXFORD 
STREET, LONDON, W.C. 2 
CHICAGO: THE UNIVERSITY OF CHICAGO PRESS 
(Agent for the United States and Canada) 
BOMBAY, CALCUTTA, MADRAS: MACMILLAN & CO., LTD. 
TOKYO: THE MARUZEN-KABUSHIKI-KAISHA 
CAPE town: t. maskew miller 
All rights reserved 
