New Series, No. 153 (Vol. 39, Part 1). 



Price 10s. 



JUN 12. 1898 



MAY, 1896. /4g,^9 

 THE 



QUARTERLY JOURNAL 



OF 



MICROSCOPICAL SCIENCE. 



KUnEl> BY 



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



Linacre Professor of Comparati-ve /liialomy, Fullniu of Merton College, ami Honorary t'ello'w 



of Exeter College, Oxford ; Corresponding Member of the Imperial ^tcademy of Sciences 



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



Member of the Royal liohemian Society of Sciences. 



WITH THE CO-OPEIIATION OF 



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



Felloiu and Lecturer of Trinity College, Cambridge; 

 AND 



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



Jvdrell Professor of Zoology and Comparali-ve Anatomy in Uni-versity College, London; 

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



WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. 



LONDON- 

 J. & A. CHURCHILL, 7, GREAT MART.BOROUGH STREET. 



1896. 



Adlard and Son,] 



[Barllioloniew Close 



I 



