Journal of the 



Ropal iKicroscoplcal Socktp 



CONTAINING ITS TRANSACTIONS AND PROCEEDINGS 



AND 



A SUMMARY OF CURRENT RESEARCHES RELATING TO 



zooi-.o<3-""5r .A-isriD bot^^ist^ 



(principally Invertebrata and Cryptogamia) 



3S/i:iG:ROsao:p"2', <Ssc. 



EDITED BY 

 CHARLES SINGER, M.A. M.D. F.R.C.P. 



\VI III TME ASSISTANCE OF THE PUBLICATION COMMITTEE AND 



J. ARTHUR THOMSON, M.A. LL.D. A. N. DISNEY, M.A. B.Sc 



Regius Professor of Natural History in the F.IAN G.RAWLINS 



University of Aberdeen 



FELLOWS OF THE SOCIETY, 



A. B. RENDLE, M.A. D.Sc. F.R.S. F.L.S. 



Keeper, Department of Bo tatty, British Museum 



AND 



RALPH ST. JOHN BROOKS, 

 M.A. M.D. D.P.H. D.T.M. & H. (Camb.) 



Minimis partibus, per totum Naturae campum, certitude omnis innititur 

 qiias qui fugit pariter Naturam fugit.— Zm«^«j-. 



FOR THE YEAR 

 1920 



TO BE OBTAINED AT THE SOCIETY'S ROOMS 



20 HANOVER SQUARE, LONDON, W.i 

 OF Messrs. WILLIAMS & NORGATE, 14 Henrietta Street, London, W.C.2 

 AND of Messrs. DULAU & CO., Ltd., 34 Margaret Street, London, W.i 



