62 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



ENGLAND (Continued) 



311. . Etwas iiber den Zinn- und Kupferbergbau in Kornwallis. Aus 



Briefen eines reisenden Deutschen vom October, 1783. Aus der hand- 

 schrift. 



Johann Bernouilli's Samnilung Kurzer Reisebeschieibungen, Jahrgang 1784, Vol. 13, 

 Berlin, pp. 363-374. 

 Not available to the authors. 



312. . Some observations on the mines of Cornwall and Devon, describ- 

 ing the art of training a load, the art and manner of digging the ore 

 and the way of dressing and of blowing tin. 



Philos. Trans. Roy. See. London, abridged, Vol. 1, 1S09, London, pp. 565-574. 

 First published in Vol. 6, 1671, pp. 2096-2113. 

 The working of tin veins (" loads "), and the drowsing and smelting of the ore. 



313. . On the mining district of Redruth. 



Quart. Mg. Rev., No. 6, 1832, London, pp. 201-225. 



History of the mining and a description of the geology of the district. 



314. . Tincroft. 



Mg. .Journ. Railw. Comm. Gaz., Vol. 1, 1835, I-x^mdon, pp. 87, 108. 



A history and description of the various lodes and working of the Tincroft mine. 



314a. . Cornwall and mines. 



Dtiblin University Magazine, Vol. .58 (July), 1801, Dublin, pp. 32-45. 

 A popular description of tin mining in Cornwall. 



315. Anonymous [Salmon, H. C. (?)]. The St. Ives and Levant tin-mining 



district, Cornwall. 



Mg. Smelt. Mag., Mo. Rev. Pract. Mg. Quarry. Met., Vol. 3, 1863, London, p. 138. 

 Not available to the authors. 



31G. Anonymous. The system of selling tin ore in Cornwall. 



Mg. Smelt. Mag. Mo. Rev. Pract. Mg. Quarry. Met., Vol. 5, 1864, Dmdon, pp. 

 6-11, 132-135. 



317. . Cornish tin-mining. Great Vor district. 



Mg. Journ. Railw. Comm. Oaz., Vol. 55, 1885, London, p. 987. 

 Discusses present mining conditions with special reference to the future of the 

 Great Vor district. 



318. . Working low grade tin ores. 



Mg. Sci. Press, Vol. 65, 1892, San Francisco, p. 187. 



The tin at Wheal Prosper, Cornwall, is doubtless the lowest grade of any in the 

 world, yet is being worked with profit. Ore runs 3 pounds black tin per ton of 

 ore, or about 0.13 per cent. Prof. C. Le Neve Foster gives following reasons: 



1. Rock soft and friable, easily stamped. 



2. Tin in large grains, hence fine stamping is not necessary. 



3. The light specific gravity of substances mixed with tin, make separation by 

 water easy. 



4. There is water power at command. 



319. . Tin mining. 



Mg. Sci. Press, Vol. 67, 1893, San Francisco, p. 356. 



Some curious statements about tin mining in Cornwall, taken from " Symon's 

 Gazetteer " of Cornwall. 



