PROCEEDINGS 



OF THE 



EOYAL SOCIETY OF LONDON. 



From January 10, 1878, to June 20, 1878. 



VOL. XXVII. 



OF 



CO, 



n 1879 y 



LONDON: 



HARRISON AND SONS, ST. MARTIN'S LANE. 



|3rint«s in ©rbinarg to Htx Utajfstg. 



MDCCCLXXVIII. 



