QUARTERLY JOURNAL 
OF 
MICROSCOPICAL SCIENCE: 
EDITED BY 
JOSEPH FRANK PAYNE, M.B. Oxon., B.Sc. Lonp., 
Fellow of Magdalen College, Oxford ; Assistant Physician to St. Thomas’s Hospital ; 
EK. RAY LANKESTER, M.A., F.R.S., 
Fellow and Lecturer of Exeter College, Oxford; Professor of Zoology and Comparative 
Anatomy in University College, London ; 
AND 
W. T. THISELTON DYER, M.A. Oxon., B.Sc. Lonp., F.L.S. 
VOLUME XV.—New Series. 
OMith Allustrations on Wood and Stone. 
LONDON: 
J. & A. CHURCHILL, NEW BURLINGTON STREET. 
“1875. 
