Vol. 12, No. 4 
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l ■-** 
PARASITOLOGY 
EDITED BY 
GEORGE H. F. NUTTALL, M.D., Ph.D., Sc.D., F.R.S. 
Quick Professor of Biology in the University of Cambridge 
I 
CAMBRIDGE UNIVERSITY PRESS 
C. F. CLAY, Manager 
LONDON: FETTER LANE, E.C. 4 
ALSO 
H. K. LEWIS AND CO., LTD., 136, GOWER STREET, LONDON, W.C. 1 
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BOMBAY, CALCUTTA, MADRAS : MACMILLAN & CO., LTD. 
TOKYO l THE MARUZEN-KABUSHIKI-KAISHA 
Jj 
Fifteen Shillings net ^ 
[Issued 10 January, 1921] 
