& 





New Series, No. 138 (Vol. 35, Part 2). 



SEPTEMBEE, 1893. 



THE 



Price 10s. 



QUARTERLY JOURNAL 



MICROSCOPICAL SCIENCE. 



EDITED BY 



E. EAY LANKESTEE, M.A., LL.D., F.E.S., 



Linacre Professor of Comparative Anatomy , Fellow of Merton College, and 

 Honorary Fellow of Exeter College, Oxford; 



WITH THE CO-OPEBATION OP 



ADAM SEDGWICK, M.A., E.E.S., 



Fellow and lecturer of Trinity College, Cambridge; 



A. MILNES MAESHALL, M.A., D.Sc, M.D., E.E.S., 



Late Fellow of St. John's College, Cambridge; Professor in the Victoria University ; Beyer Prof essor of Zoology 

 in the Owens College, Manchester. 



W. F. E. WELDON, M.A., E.E.S., 



Jodrell Professor of Zoology and Comparative Anatomy in University College, London; 

 Fellow of St. John's College, Cambridge. 



WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. 



LONDON: 

 J. & A. CHURCHILL, 11, NEW BURLINGTON STEEET. 



1893. 



Mlard and Son,] 



[Bartholomew Close. 



