PROCEEDINGS 



OF THE 



ROYAL SOCIETY OF LONDON. 



From December 18, 1879, to June 17, 1880. 



VOL. XXX. 1 Z4 Q 



LONDON: 



HARRISON AND SONS, ST. MARTIN'S LAKE. 



f rinttrs in ©rbinarg in ||tt glajtsij. 



MDCCCLXXX. 



