AN 
r 
INT 
RODUCTION 
TO THE 
F.L.S., F.Z.S., M.E.S., F.ETHN.S., F.R.GEOG.S., M.RAY S., 
HON. MEMB. OF THE ROYAL ACADEMY OF SCIENCES OF TURIN, OF THE ROY. ZOOL. 
SOC. OF IRELAND, OF THE PENZANCE NAT. HIST. SOC., OF THE WORCESTER 
NAT. HIST. SOC., OF THE NORTHUMBERLAND, DURHAM AND NEW- 
CASTLE NAT. HIST. SOC., OF THE NAT, HIST. SOC. OF 
DARMSTADT, OF THE TASMANIAN SOC. OF VAN 
diemen's land, of the nat. hist. soc. 
OF STRASBOURG, AND OF THE NAT. 
HIST. SOC. OF IPSWICH. 
PRINTED FOR THE AUTHOR, 
BY RICHARD AND JOHN E. TAYLOR, RED LION COURT, FLEET STREET. 
1848. 
