PROCEEDINGS 



OF THT2 



ROYAL SOCIETY OF LONDON. 



From January 6, 1887, to June 16, 1887. 



VOL. XLII. 



" 'MAN Ot p S? N 



LONDON: 



HARRISON AND SONS, ST. MARTIN'S LANE, 



printers in (Drbtttarg to Her Utajestjr. 

 MDCCCLXXXYII. 



