Journal 
OF THE 
Royal 
Microscopical Society 
CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 
AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 
ZOOLOGY BOTANY 
(principally Invertebrata and Cryptogamia), 
MICROSCOPY, <Szc_ 
Edited by 
F. JEFFREY BELL, M.A., 
One of the Secretaries of the Society 
and Professor of Comparative Anatomy and Zoology in King's College ; 
WITH THE ASSISTANCE OF THE PUBLICATION COMMITTEE AND 
A. W. BENNETT. M.A., B.Sc., F.L.S., 
Lecturer on Botany at St. Thomas's Hospital , 
R. G. HEBB, M.A, M.D. (Cantab f and 
J. ARTHUR THOMSON, M.A., 
Lecturer on Zoology in the School of Medicine, 
Edinburgh, 
FELLOWS OF THE SOCIETY. 
FOR THE YEAR 
1892 . 
Part 1. 
PUBLISHED FOR THE SOCIETY BY 
WILLIAMS & NORGATE, 
LONDON AND EDINBURGH. 
