110 LIST OF WORKS ON GEOLOGY, &C. 



Waters of a Salt Spring in Huel Seton Mine, with a Chemical 

 and Microscopical Examination of certain Eocks in its vicinity. 

 Phil. Mag., Ser. 4, vol. xlvi, p. 26. 



639. SCHRAUF, Dr. A. Mineralogische Beobachtungen. [Bro- 

 chantite, Warringtonite]. Sitzimgsh. Kaiserlich. Akad. Wissenchaft. 

 Ixvii, p. 275. 



640. Tilly, H. Particulars of a Thermal Spring at Wheal 

 Seton Mine, in the Parish of Camborne, with a Comparative Table 

 of Analyses of similar Springs in the United, Balleswidden, 

 Botallack, and Crown Mines. ReiJ. Miners' Assoc. Cornwall and 

 Devon, 1872-3, p. 53. 



641. Tregay, Capt. W. Some Eemarks on Crossbranches 

 and Crossheads ; being an Enquiry into their Effect on Mineral 

 Veins. Ibid, p. 57. 



No Date. 



643-652. Sheets 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 of the 

 Map of the Geological Survey, by Sir H. De la Beche (1839 or 

 earlier). Mineral Lodes added by W. W. Smyth some years 

 later. 



