TRANSACTIONS 



OF THE 



ROYAL SOCIETY OF EDINBURGH. 



Vol. IX. 



^•='S^Jeit^TS^'^ 



EDINBURGH : 



PRINTED FOR WILLIAM & CHARLES TAIT, PRINCe's STREET, 



AND LONGMAN, HURST, REES, ORME, & BROWN, 



LONDON. 



1823. 



