

New Series, No. 137 (Vol. 35, Part 1). /f"f ! Price 10s 



JULY, 1893. 



THE 



QUARTERLY JOURNAL 



OF 



MICROSCOPICAL SCIENCE. 



EDITED BY 



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



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

 Honorary Fellow of Exeter College, Oxford ; 



WITH THE CO-OPERATION OF 



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



Fellow and Lecturer of Trinity College, Cambridge ; 



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



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

 in the Owens College, Manchester. 



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



Jodrell Professor of Zoology and Comparative Anatomy in Uuiversity College, London 

 Fellow of St. John's College, Cambridge. 



WITH LITHOGBAPHIC PLATES AND ENGRAVINGS ON WOOD. 



LONDON: 

 J. & A. CHUECHILL, 11, NEW BTJELINGTON STEEET 



MDCCCXCIII. 



Idlard and Son,] 



[Bartholomew Close. 



