TRANSACTI ONS 



CAMBRIDGE 



PHILOSOPHICAL SOCIETY. 



Volume VII. Part I. 



CAMBRIDGE: 



PRINTED AT THE PITT PRESS; 



AND SOLD BY 



JOHN WILLIAM PARKER, WEST STRAND, LONDON; 



J. & J. J. DEIGHTON ; AND T. STEVENSON, CAMBRIDGE. 



M.DCCC.XXXIX. 



