70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



ENGLAND (Continued) 



374. Davies, Alfred T. The phenomena of heaves or faults in the mineral 



veins of St. Agnes, Cornwall. 



Rep. Proc. Min. Ass. C'oniwall nnd Devon, for 1870 (1880), Truro, pp. 12-33, figs. 21. 



Discussion of vein or lode formation, with a number of practical rules and 

 diagrams for the guidance of miners showing how to follow the continuation of 

 veins wh^eh have been faulted or heaved. Applies to the tin veins of the district. 



Davies, D. C. See No. 1317. 



375. Davy, Sir Humphry. Hints on the geology of Cornwall. 



Trans. Roy. Geol. Soc. Cornwall, Vol. I, 1818, Penzance, pp. 38-50. 

 Notes on the occurrence of tin in Cornwall. 



Dechen, H. von. See No. 545. 



376. De la Beche, Henry T. Report on the geology of Cornwall, Devon and 



West Somerset. 



Mem. Geol. Surv. Great Britain, 1839, London, pp. 1-648, maps and plates. 



37Ga. Dew, J. H. W. Cornish tin alluvials. 



Mg. Journ. Railw. Comm. Gaz. Vol. 88, 1910, London, pp. 599-600. 

 Correspondence concerning tin bearing gravels in Cornwall. 



DiETzscH, F. See No. 1479. 



377. Drew, S. History of Cornwall. 1824. 



Not available to the authors. 



378. DuFRfiNOY, P. A., and Beaumont, Elie ue. Notice sur le gisement, 



I'exploitation et le traitement des minerals d'etain et de cuivre du 

 Cornouailles. 



Ann. Mines, Vol. 9, 1824, Paris, pp. 827-908, Vol. 10, pp. 331-366, 401-426; Vol. 

 11, pp. 207-2.54. 

 Reprint: Arch. Bergb. Hiitt. Vol. 13, 1826, Berlin, pp. 60-185. 

 Reviews: Zeitschr. Min., 1826, II, Frankfurt-am-Main, pp. 427-439. 

 Ann. Sci. Nat., Vol. 7, 1826, Paris, pp. 195-243. 



Edmonds, Richard. See No. 1389. 



379. English, Henry. A compendium of useful information relating to the 



companies formed for working British mines, containing copies of the 

 prospectuses, amount of capital, number of shares, names of directors, 

 etc., with general observations on their progress, detailing their opera- 

 tions, mines in their possession and original information. 



1826, London, pp. 124. 



Fawns, Sydney. See No. 1320. 

 Ferguson, Henry T. See No. 1654. 

 379a. Feu\'re, P. A. Cornish Mining. 



Times Eng. Suppl., Vol. 1, 1905, London, pp. 250, 273, 274, and 309-310. 



Discusses briefly economic conditions of tin mining in Cornwall. Quotes Robert 

 Hunt to the effect that the tin lodes down to 600 feet in depth average 3.97 feet 

 wide, and below that 3.36 feet, and Henry Louis as saying that the average tin 

 content is 2 per cent. In the second article dues and royalties and their effect 

 upon Cornish tin mining are discussed. The third article treats of working costs. 



