TRANSACTIONS 



OF THE 



CAMBRIDGE 



PHILOSOPHICAL SOCIETY. 



ESTABLISHED NOVEMBER 15, 1819. 



VOLUME THE EIGHTH. 



CAMBRIDGE: 



I'RIXTKD AT TUB UXIVBRHITV PRESS: 



AND FOLD HT 



JOHN WILLIAM PARKER, WEST STRAND, LONDON; 

 J. DETGHTON; AND MACMILLAN & CO.. CAMBRIPGE. 



M.DCCC.XLIX. 



