THE MONTHLY 



MICKOSCOPICAL JOUENAL: 



. TRANSACTIONS 



OF THE 



ROYAL MICROSCOPICAL SOCIETY, 



AND 



RECORD OF HISTOLOaiOAL RESEARCH 



AT HOME AND ABROAD. 



EDITED BY 



HENKY LAWSON, M.D., M.E.C.P., F.R.M.S., 



Assistant Physician to, and Lecturer on Physiology in, St. Mary's Hospital. 



VOLUME XII 



LONDON: 

 ROBEET HAEDWICKE, 192, PICCADILLY, W. 



MDCCCLXXIV, 



