MEMOIRS 
OF THE 
WERNERIAN 
NATURAL HISTORY SOCIETY. 
VOL. IV. 
For the Yeahs 1821-22-23, 
PART II. 
WITH SEVEN ENGRAVINGS. 
EDINBURGH : 
PRINTED FOR 
ADAM BLACK, NORTH BRIDGE, EDINBURGH; 
AND LONGMAN, HURST, REES, ORME, & BROWN, 
LONDON. 
1823. 
