QUARTERLY JOURNAL 



OF 



MICROSCOPICAL SCIENCE: 



EDITED BT 



E. RAY LANKESTER, M.A., F.R.S., F.L.S., 



Fellow of Exeter College, Oxford, and Jodrell Professor of Zoology in Universitg 



College, London ; 



WITH TUE CO-OPEEATION OF 



W. T. THISELTON DYER, M.A., C.M.G., E.R.S., F.L.S., 



Assistant Director of the Royal Gardens, Kew ; 



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



Joint' Lecturer on General Anatomy and Physiology in the Medical School of 

 St. Bartholomew's Hospital, London ; 



II. N. MOSELEY, M.A., F.R.S., F.L.S., 



I.i nacre Professor of Human and Comparative Anatomy in the University of Oxford, 



AND 



ADAM SEDGWICK, M.A., 



Fellow and Assistant- Lecturer of Trinity College, Cambridge. 



VOLUME XXIII.— New Series. 



LONDON: 

 J. & A. CHURCHILL, 11, NEW BURLINGTON STREET. 



1883. 



