L„ 



poarno 



PHILOSOPHICAL 



^^^n 



TRANSACTIONS, 



OF THE 



ROYAL SOCIETY 



Of 



LONDON. 



FOR THE YEAR MDCCCXIII. 



PART 1.' !t 



LONDON, 



PRINTED BY W. BDLMEIt AND CO. CLEVELAND-ROW, ST. JAMESES ; 



ANI> SOLD BY G.AND W.NICOL, PALL-MALL, BOOKSELLERS TO HIS MAJESTY, 



AND PRINTERS TO THE ROYAL SOCIETY. 



MDCCCXIII. 



