78 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



ENGLAND (Continued) 



438. OXLAND, R. The mineral resources of Devon and Cornwall. 



Ann. Rep. Trans. Plymouth Inst., Devon and Cornwall Nat. Hist. Soc., Vol. 5, 

 1873-1874 (1874), Plymouth, pp. 48-5-493. 



Not available to the authors. 



At time of writing article, there was a great depression in Cornish tin and copper 

 mining on account of market conditions. The article is an inquiry into the possibility 

 of reviving the mining industries. 



439. PARIS, JOHN AYRTON. A guide to Mount's Bay and the Land's End. 



1824, London, 2d Ed. 



Contains many semi-scientific allusions to the tin mines of Cornwall, with points 

 concerning their history, origin of names, etc. 



PEARCE, GILBERT B. See No. 1407. 



440. PEARCE, RICHARD. Notes on the occurrence of cobalt in connection with 



the tin ores of Cornwall. 



Journ. Roy. Inst. Cornwall, No. 13, Vol. 4, 1872, Truro, pp. 81-83. 



Author found an appreciable quantity of cobalt in a sample of dressed tin ore 

 (black tin) from Dolcoath mine. Analysis of " hard-head " showed 4.40 per cent 

 cobalt and 16.25 per cent tin. Concludes that cobalt might be extracted profitably 

 from " hard-head " and at same time afford a means for recovery of large portion of 

 tin which was then lost. 



441. . The anniversary address of the president. 



Trans. Roy. Geol. Soc. Cornwall, Vol. 13, pt. 2, 1906, Penzance, pp. 97-112. 

 Discussion of Cornwall's mineral resources and their future. 



. See No. 1629. 



PENBERTHY, JOHN. See No. 467. 



442. PHILLIPS, J. ARTHUR. The rocks of the mining districts of Cornwall, and 



their relation to metalliferous deposits. 



Quart. Journ. Geol. Soc. London, Vol. 31, 1875, London, pp. 319-345, pi. 16. 



Gives a description both from macroscopic and microscopic examination of the 

 rocks in which mineral deposits occur in Cornwall, with analyses of a number of 

 them. Also discusses the mineral deposits including tin. 



See No. 1632. 



PHILLIPS, J. A., and Louis, H. See No. 1350. 



443. PHILLIPS, WM. On the veins of Cornwall. 



Trans. Geol. Soc. London, Vol. 2, 1814, London, pp. 110-160. 



History and description of veins of Cornwall, including the Tincroft mine. 



PHILLIPS, WILLIAM. See No. 1633. 

 PLINIUS, CAIUS. See No. 1408. 

 POLWHELE, R. See No. 1409. 



444. PRYCE, WILLIAM. Mineralogia Cornubiensis. A treatise on minerals, 



mines and mining: Containing the theory and natural history of strata, 

 fissures and lodes, with the methods of discovering and working of tin, 

 copper and lead mines, and of cleansing and metallizing their products, 



