189a 



i 



New Series, No. 162 (Vol. 41, Part 2). Price 10s. 



JUNE, 1898. 



J51J 



' THE 



QUARTERLY JOURNAL 



OF 



MICROSCOPICAL SCIENCE. 



EDITED BY 



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



Linacre Professor of Comparative Anatomy, Fello-w of Merton College, and Honorary Fellow of Exeter 



College, Oxford; Corresponding Member of the Imperial Academy of Sciences of St. Petersburg, 



and of the Academy of Sciences of Philadelphia ; Foreign Member of the Royal 



Bohemian Society of Sciences; Honorary Member of the Netv York Academy of Sciences; 



Associate Member of the Biological Society of Paris; Fullerian Professor of 



Physiology in the Royal Institution of London. 



WITH THE CO-OPERATION OF 



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



Felloiv and Tutor of Trinity College, Cambridge; 



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



Jodrell Profeisor of Zoology and Comparati-ve Anatomy in Uniz/ersity College, London; 

 late Fello-w of St. John's College, Cambridge. 



WITH LITHOGRAPHIC PLATES AND ENGRAVINGS ON WOOD. 



LONDON: 



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



1898. 



Adlaid and Son,] 



[Bartholomew Close. 



