New Series, No. LXXI. Price 5s. 



JULY, 1878. 



THE 



QUARTERLY JOURNAL 



OF 



MICROSCOPICAL SCIENCE. 



SDITBD BT 



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



FeUow of Eztter College, Oxford and Professor of Zoology and Comparative Jnatomy in Umrersity 



College, London ; 



WITH THE CD-OP KKATION OF 



Wm. archer, F.R.S., M.R.I.A., , 



Dublin. 



F. M. BALFOUR, M.A., F R.S., F.L.S., 



Fellow and Lecturer of Trinity College, Camhridge. 



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



Ltcturer on Histology in Si. Bartkolotuetc's Hospital Medical School, London. 

 WITH LITHOGRAPHIC PLATES AND ENGEAVINGS ON WOOLL 



LONDON: 

 J. & A. CHURCHILL, NEW BURLINGTON STREET. 



MDCCCLXXVTII. 



J. E. Adiard.] fBartholonien' Close. 



