My 
SILTJRI A. 
f\ • ' >, A HISTORY OF 
THE OLDEST ROCKS IN THE BRITISH ISLES 
B^X AND OTHER COUNTRIES; 
L0ND9H 
WITH SKETCHES OF THE ORIGIN AND DISTRIBUTION OF NATIVE GOLD, 
THE GENERAL SUCCESSION OF GEOLOGICAL FORMATIONS, 
AND CHANGES OF THE EARTH'S SURFACE. 
By SIR RODERICK I. MURCHISON, Bart., K.C.B., 
LATE DIRECTOR GENERAL OF THE GEOLOGICAL SURVEY OP THE BRITISH ISLES ; 
PRESIDENT OP THE ROYAL GEOGRAPHICAL SOCIETY OF LONDON, 
ETC., ETC. 
FIFTH EDITION. 
WITH MAP AND TWO HUNDRED ILLUSTRATIONS. 
LONDON: 
JOHN MURRAY, ALBEMARLE STREET. 
r 1872. 
