TRANSACTIONS 



CAMBEIDGE 



PHILOSOPHICAL SOCIETY. 



ESTABLISHED NOVEMBER 15, 1819. 



VOLUME THE NINTH. 



CAMBRIDGE: 

 3Printt& at tj)e 58nfomttg prtss; 



AND SOLD BY 



DEIGHTON, BELL AND CO. AND MACMILLAN AND CO. CAMBEIDGE; 

 BELL AND DALDY, LONDON. 



M.DCCC.LVI. 



