QUARTERLY JOURNAL 
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MICROSCOPICAL SCLENCE: 
EDITED BY 
E. RAY LANKESTER, M.A., LL.D., F.R.S., 
Honorary Fellow of Exeter College, Oxford, and Jodrell Professor of Zoology in 
University College, London ; 
WITH THE CO-OPERATION OF 
KE. KLEIN, M.D., F.RBS., 
Lecturer on General Anatomy and Physiology in the Medical School of 
St. Bartholomew’s Hospital, London, 
AND 
ADAM SEDGWICK, M.A., F.RS., 
Fellow and Assistant-Lecturer of Trinity College, Cambridge. 
VOLUME XXX.—NeEw SeErIEs. 
With Rithographic Plates and Engrabings on Wood. 
LOND ON: 
J. & A. CHURCHILL, 11, NEW BURLINGTON- STREET. 
1890. 
