70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



ENGLAND (Continued) 



422. Leifciiild, Johx R. Cornwall, its mines and miners, with sketches of 



scenery. Designed as a popular introduction to metallic mines. 



1855, London, pp. 303. 



A readable popular account of the scenery and mines of Cornwall, including both 

 alluvial and lode tin mines, with a short summary of foreign tin mines known at 

 the time. Contains a general account of the geology of the Cornish tin mines, 

 including the faulting. It also covers, in a general way, the manner of operating 

 the mines and metallurgical processes used. Gives cost of operating, production 

 and wages. 



422a. LiNGTOx, T. Dolcoath copper and tin mine, Cornwall. 



Mg. World, Vol. 32, 1910, Chicago, p. 107. 



Treated geologically, also gives figures showing ore raised, outlay and profit. 



Lewis, Geokge Randall. See No. 1402. 



423. LoBLEY, J. Logan. Two days in a mining district. 



Proc. Geol. Ass., Vol. 2, 1873, London, pp. 45-00. 



Copper and tin mining district of -East Cornwall is described. List of Coinish 

 metallic minerals given. " All the Cornish tin is procured from the peroxide, for 

 although tin pyrites or cupreous sulphuret of tin does occur in Cornwall, it is 

 rare and not used for the production of metal." 



424. Lock, C. G. Waknfoed. 



Economic Mining, IS'Jo, \ew York, pp. 622-623. 

 Treats of Cornish tin. 



Louis, Henry. See No. 1340. 

 Lower, T. See 489a. 



425. MacAlister, Donald A. Vertical distribution of the commercially 



valuable ores in the Camborne lodes. 



Sunini. Progr. Geol. Surv. LTnitcd Kingdom for lD(i3 (lf«i4), London, pp. 26-28. 



426. . A cross section and some notes on the tin and copper deposits 



of Camborne, with special reference to the limits of productive ore 

 ground. 



Trans. Roy. Geol. Soc. Cornwall, Vol. 12, 1905, Penzance, pp. 773-795, figs. 5. 



427. . Geological aspect of the lodes of Cornwall. 



Econ. Geol., Vol. 3, 1908, Lancaster, pp. 363-380. Geol. map. 



Gives a short historical summary of the Cornish mines and their yield from 

 early times. He then treats the general geology, the lodes, their structure and 

 relations to the granite. Tlie pneumatolytic and metasomatic action of vein 

 forming solutions is treated with regard to granite, slate and greenstone. The 

 genesis of the ores is ascribed to the solutions from a cooling granitic magma. 

 The alluvial tin deposits are briefly described. 



. See Nos. 449, 1659. 



428. Maclaren, J. Malcolm. The occurrence of gold in Great Britain and 



Ireland. 



Trans. Inst. Mg. Eng., Vol. 25, 1903, London and Newcastle-upon-Tvne, pp. 438-430, 

 440, 494. 



