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New Series, No. CXVI (Vol. XXIX. Part 4). Price 10s. 



_7S^^7 APEIL, 1889. 



/ / / THE 



QUARTERLY JOURNAL 



OP 



MICROSCOPICAL SCIENCE. 



BDITED BT 



E. UAY LANKESTER, M.A., LL.D., P.R.S., 



ftlluv of Rxeltr College, Oxford, and Jodrell Professor of Zoology in Vnivei sity College, 



London ; 



WITH THK CO-OPKRATION Of 



E. KLEIN, M.D., F.R.S., 



Lerlurer on General Anatomy and Physiology in the Medical School uf SI. Knt thuUnnew'i Hoifiital, 



London. 



H. N. MOSELEY, M.A., LL.D., F.K.S., 



Linacre Professor of Ilutnan ami Comparative Anatomy in the University of Oxford, 



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



Fellow and Assistant-Lecturer of Trinity College, Cambridge. 



WITH LITHOGKAPHIC PLATES AND ENGRAVINGS ON WOOD. 



LONDON: 

 J. & A. CHUKCHILL, 11, NEW BUKLINGTON STREET. 



MDCCCLXXXIX. 



Adlard and Son.] 



[Bartholomew Close. 



