The Journal is issued on the third Wednesday of 
February, April, June, August, October, and December. 
1891. Part 5. 
OCTOBER. 
/To Non-Fellows, 
\ Price 5s. 
Journal 
|\I0V >6 wji 
OF THE 
fc 77 Royal 
Microscopical Society; 
CONTAINING IT8 TRANSACTIONS AND PROCEEDINGS, 
and a summary of current researches relating to 
ZOOLOGY A.3STX5 BOTANY 
(principally Invertebrata and Cryptogamia), 
MICROSCOPY, See- 
Edited by 
F. JEFFREY BELL, M.A., 
One of the Secretaries of the Society 
and Professor of Comparative Anatomy and Zoology in Kings College ; 
WITH THE ASSISTANCE OF THE PUBLICATION COMMITTEE AND 
J. ARTHUR THOMSON, M.A., 
Lecturer on Zoology in the School of Medicine, 
Edinburgh, 
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 .), and 
FELLOWS OF THE SOCIETY. 
WILLIAMS & NORGATE, 
LONDON AND EDINBURGH. 
PRINTED BY WM. CLOWES AND SONS LIMITED,] 
[STAMFORD STREET AND CHARING CROSS 
