XXIV 
CONTENTS. 
in Eissures in solid Rock.—Veins shifting other Veins.—Polisliing of their 
Walls or “Slicken sides.”—Shells and Pebbles in Lodes.—Evidence of the 
successive Enlargement and Reopening of Veins.—Examples in Cornwall 
and in Auvergne.—Dimensions of Veins.—Why some alternately swell 
out and contract.—Pilling of Lodes by Sublimation from below.—Sup¬ 
posed relative Age of the precious Metals.—Copper and lead Veins in Ire¬ 
land older than Cornish Tin.—Lead Vein in Lias, Glamorganshire.—Gold 
in Russia, California, and Australia.—Connection of hot Springs and min¬ 
eral Veins...Page 605 
Index 
619 
