l./^iZ. 



New Series, No. LXXXVI. J'U^ 2^ 



APEIL, 1882. 



Price 7&. Cd. 



THE 



QUARTERLY JOURNAL 



OF 



MICROSCOPICAL SCIENCE. 



BDITED BY 



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



FMow of Exeter College, Oxford, and Regius Professor of Natural History in the University of 



Edinburgh ; 



WITH THE CO-OPEEATION OP 



F. M. BALFOUE, LLC, F.E.S., F.L.S., 



Fellow and Lecturer of Trinity College, Cambridge. 



W. T. THISELTON DTEE, M.A., F.E.S., F.L.S., 



Assistant Director of the Royal Gardens, Kew. 



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



Lecturer on Histology in St. Bartholomew's Hospital Medical School, London. 

 WITH LITHOGEAPHIC PLATES AKD ENGRAVINGS ON WOOD. 



LONDON: 

 J. & A. CHUECHILL, NEW BURLINGTON STREET. 



MDCCCLXXXII. 



Adlard.j 



[Bartliolomew Close 



