

QUARTERLY JOURNAL 



OP 



MICROSCOPICAL SCIENCE. 



EDITED BY 



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



Linacre Professor of Comparative Anatomy, Felloio of Merton College, and Sonorary 



Felloiv of Exeter College, Oxford ; Corresponding Member of the Imperial 



Academy of Sciences of St. Petershurg, and of the Academy of Sciences 



of Philadelphia ; Foreign Member of the Royal Bohemian Society 



of Sciences ; Associate Member of the Biological Society 



of Paris ; Fullerian Professor of Physiology 



in the Royal Institution of London. 



WITH THE CO-OPEEATION OF 



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



Fellow and Tutor of Trinity College, Cambridge ; 

 AND 



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



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

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



VOLUME 40.— New Seeies. 



LONDON: 

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



1898. 



