EFRANSACTIONS 
OF THE 
ho LAL SOCIETY 
OF 
EDINBURGH. 
VOL.. XXV EM. 

EDINBURGH: 
PUBLISHED BY ROBERT GRANT & SON, 107 PRINCES STREET, 
AND WILLIAMS & NORGATH, 14 HENRIETTA STREET, COVENT GARDEN, LONDON. 
MDCCCLXXIX. 
