The Journal is issued quarterly in March, June, 
September, and December. 
Annual Subscription , 42s. post free. 
is? ^ 
i 1922. Part 4. DECEMBER. Price 10s. net. 
jz. 
^ Journal of the 
Royal microscopical Society 
CONTAINING ITS TRANSACTIONS AND PROCEEDINGS 
AND 
A SUMMARY OF CURRENT RESEARCHES 
RELATING TO 
ZOOLOGY AND BOTANY 
MICROSCOPY, &c. 
EDITED BY 
JOHN W. H. EYRE, M.D. F.R.S.Edin., 
Professor of Bacteriology in the University of London 
AND 
CHARLES SINGER, M.A. D.Litt. P.R.C.P. 
Lecturer in the History of Medicine in the University of London 
WITH THK ASSISTANCE OF THE PUBLICATION COMMITTEE AND 
J. ARTHUR THOMSON, M.A. LL.D. A. N. DISNEY, M.A B.Sc. 
R, si „, F. IAN G. RAWLINS. 
FELLOWS OF THK SOCIETY, 
AND 
A. B. RENDLE, M.A. D.Sc. F.R.S. F.L.S. 
Keeper, Department of Botany, British Museum 
Minimis partibus, per totum Naturae campum, certitudo omnis innititur 
quas qui fugit pariter Naturam fugit. — Linnceus. 
Published by THE ROYAL MICROSCOPICAL SOCIETY, 
20 HANOVER SQUARE, LONDON, W.l 
AND CAN ALSO BE OBTAINED FROM 
Messrs. WILLIAMS & NORGATE, 14 Henrietta Street, London, W.C.2 ( 
and Messrs. DULAU & CO., Ltd., 34 Margaret Street, London, W.i y 
LONDON : PRINTED BY WM. CLOWES AND SONS. J.TD., GREAT WINDMILL STREET, W.l, AND DUKE STREET, STAMFORD STREET, S.E.l. 
261 
