_The country uninteresting to the traveller in search of the picturesque, but affording a rich and instructive field of Mineralogical inquiry, 176.--Antiquity of the Cornish Tin Trade, 177.--Stannary Courts--Copper Ore of comparatively modern discovery, 178.--Lead, Cobalt, and Silver ores, 180.--Average width of the metalliferous veins--Depth of the principal mines,_ _181.--North and South veins, or Cross Courses, 181.--Heaves of the Lodes--A remarkable instance in Huel Peever, 182.--Costeening, the meaning of the term--METHOD OF WORKING THE CORNISH MINES, 183.--Blasting the rock with gunpowder, 186.--DESCENT INTO A MINE, 186.--Interior of a Mine, 187.--Temperature of Mines, 189.--Mines considered as property, 190.--Various processes by which the ore is rendered marketable, 191.--Spalling, 191.--Stamping, 192.--Dressing, 193.--Vanning, 194.--Burning, 194.--The Standard Barrow, 195.--Names of Mines, whence derived, 196.--Number of Mines, 196.--STREAM WORKS, 197.--Gold found there, 197.--Clowance, the seat of Sir John St. Aubyn--Pendarves, the seat of E. W. W. Pendarves, Esq.--Tehidy Park, the mansion of Lord de Dunstanville, 198.--DOLCOATH COPPER MINE, 198.--COOK'S KITCHEN, 199.--REDRUTH--The Great Steam Engine at Chacewater, 200.--The Consolidated Mines--Huel Unity--Poldice, 202.--Hints to the Collectors of Cornish Minerals, 202.--Mineralogical Cabinets--That in the possession of Mr. Rashleigh, 203.--Of Mr. Williams's Collection, 206.--Saint Agnes, 208.--CARN-BREH HILL--The supposed grand centre of Druidical worship, 209.--Imaginary monuments of the Druids--Their true nature developed, 209.--Cleavelandite found in the porphyritic granite on the summit of the hill, 212.--Carn-breh Castle, 213._ EXCURSION VI. (_Page_ 214.) TO KYNANCE COVE AND THE LIZARD POINT.