PROCEEDINGS 



OF THE 



KOYAL SOCIETY OF LONDON. 



From March 3, 1892, to May 19, 1892. 



VOL. LI. 



OF CO/V^ 



Ionian d£?^ 



LONDON: 



HARRISON AND SONS, ST. MARTIN'S LANE, 



|)rintjexs in ©rbinarg to i*r Utajestg. 

 MDCCCXCII. 



