■i 



The Journal is issued on the second Wednesday of 

 February, April, June, August, October, and December. 



c 



i 



i^P' 



W 



1889. Part 5. 



OCTOBER. 





,%^ 



( To Non-Fellows, ^ 



I Price 5s. *^ 



Journal 



OF THE 



Royal 

 Microscopical Society; 



CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 



AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 



(principally Invertebrata and Cryptogamia), 



ivfl:ici^osooT>"5r, Ssc 



Edited by 



FRANK CRISP, LL.B., B.A., 



One of the Secretaries of the Society 

 and a Vice-Presidejit and Treasurer of the Linneatt Society of London ; 



WITH THE ASSISTANCE OF THE PUBLICATION COMMITTEE AND 



A. W. BENNETT, M.A., B.Sc, F.L.S., F. JEFFEEY BELL, M.A., F.Z.S., 



L ecturer on Botany at St. Thomas's Hospital, Professor of Comparative A rtatomy in King's College, 



JOHN MAYALL, Jun., F.Z.S., R. G. HEBB, M.A., M.D, iCantab.\ 



AND 



J. ARTHUR THOMSON, M.A., 



Lecturer on Zoology in ike School of Medicine, Edinburgh, 

 FELLOWS OF THE SOCIETY. 



^^ 



h. 



^WILLIAMS & NORGATE. 



LONDON AND EDINBURGH. 



PRINTED BY WM. CLOWES AND SONS, LIMITED,] 



[STAMFORD STREET AND CHARING CKOSf 



