4 
The Journal is issued on the third Wednesday of 
February, April, June, August, October, and December. 
1891. Part 4. 
AUGUST. 
/To Non-Fellows, 
\ Price 53 
)QQ ll 
Journal 
OF THE 
Royal 
Microscopical Society; 
CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 
AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 
ZOOLOGY -A.3STID BOTANY 
(principally Invertebrata and Cryptogamia), 
MICROSCOPY, <Sco. 
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 .), and 
J. ARTHUR THOMSON, M.A., 
Lecturer on Zoology in the School of Medicine , 
Edinburgh 
FELLOWS OF THE SOCIETY. 
WILLIAMS & NORGATE, 
LONDON AND EDINBURGH. 
f 
PRINTED BY WM. CLOWES AND SONS LIMITED,] 
[STAMFORD STREET AND CHARING CROSS. 
