TRANSACTIONS 



CAMBRIDGE 



PHILOSOPHICAL SOCIETY. 



Volume VI. Part TIT. 



CAMBRIDGE: 



PRINTED AT THE PITT PRESS; 



AWD BOLD BV 



JOHN WILLIAM PARKER, WEST STRAND. LONDON; 



J. & .1. J. DEIGHTONi AND T. STEVENSON, 



CAMBRIDGE. 



M.DCCC.XXXVIII. 



