New Series, No. 156 (Vol. 39, Part 4). 



JANUARY, 1897. 



Price 10s. 



FEB 16 1897 



THE 



QUARTERLY JOURNAL 



MICROSCOPICAL SCIENCE. 



EDITED BY 



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



Linacre Professor of Comparati-je jlr.atomy, Felln-w of Merton College, and Honorary Fellotv 

 of Exeter College, Oxford; Corresponding Member of the imperial jlcademy of Sciences 

 of St. Petersburg, and of the ylcademy of Sciences of Philadelphia; Foreign 

 . Member of the Royal Bohemian Society of Sciences. 



WITH THE CO-OPERATION OF 



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



Felloiu and Lecturer of Trinity College, Cambridge; 



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



Jodrell Professor of Zoology and Comparati-ve Anatomy in Uni-versity College, London; 

 late Felloiv of St. John's College, Cambridge. 



WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. 



LONDON: 

 J. & A. CHTJECHILL, 7, GREAT MARLBOROUGH STREET. 



1897. 



AdlarJ and Son,] 



[Bartholomew Close. 



