The Journal is issued on the second Wednesday of 

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



P 



W^ 



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1889. Part 4. 



AUGUST. 



r To Non-Fellows, 



\ Price 5s. 



^ 



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,ni 



Journal 



OF THE 



Royal 

 Microscopical Society; 



CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 



AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 



(principally Invertebrata and Cryptogamia), 



Edited by 

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



One of the Secretaries of the Society 

 and a Vice-President and Treasurer of the Linnean Society of London ; 



WITH THE ASSISTANCE OF THE PUBLICATION COMMITTEE AND 



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



Lecturer on Botany at St. Thomas's Hospital, Professorof Comparative Anatomy in Kin^s College, 



JOHN MAYALL, Jun., F.Z.S., E. G. HEBB, M.A., M.D. (^Cantab.), 



AND 



J. ARTHUR THOMSON, M.A., 



Lecturer on Zoology in the School o/ Medicine, Edinburgh, 

 FELLOWS OF THE SOCIETY. 



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WILLIAMS & NORGATE. 



LONDON AND EDINBURGH. 



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PRINTED BY WM. CLOWES AND SONS, LIMITKD.J 



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