198 GEOLOGY. 



of their development. The remainder is devoted to working and 

 manufacturing details. H. B. 



Anon. New mode of using the Magnetic Needle in searching for 



Iron Ore [Sweden]. Iron^ vol. vi. n. s. no. 130, p. 40. 

 A notice of M. Thalen's paper in Journ. de Physique. 



. Iron^ n. s. vol. vi. pp. 194, 195. A Gold Quest. Notice of 



the Gold Mines of North Wales.— P. 519. The Plumbago Mines 

 of Porrowdale. 



Petroleum Oil; its production, price, and supply. Coll. 



Guard, vol. xxx. p. 563. Reprinted from the National Oil Journal. 

 Statistique miniere et siderurgique de Belgique. [Mining 



and Metallurgical Statistics of Belgium.] 40 pp. Brussels. 

 For the decade 1865-1874. 



— . Statistique de I'industrie minerale de la Prance pour I'annee 



1874. [Mineral Statistics of Prance for 1874.] Journal Officiel, 

 28 April ; and Ann. Mines, ser. 7, vol. vii. pp. 606-611. 



(Mining Administration of Wieleczka.) Bericht iiber den 



Einbruch von Siisswassern in das Steinsalzbergwerk zu "VVieliczka. 



[Inundation and Draining of the Salt Mine of Wieliczka.] JaJirh. 



Tc.-Tc. Bcrgalcad. Bd. xxiii. pp. 145-222. 

 A memoir on the drowning of these mines in 1868, and the sub- 

 sequent measures adopted for their recovery. The introduction contains 

 a sketch of the geology ; the littoral marine origin of the deposit is 

 strongly insisted on against an open sea or lacustrine origin. H. B. 



Appleton, Edward. The Economic Geology of Devon. Trans. 

 Devon. Assoc, vol. vii. pp. 234-246. 



The products of the county are grouped under the following heads : — 

 Building Materials, Clays, Coal, and Eoad Materials, the first two 

 being specially treated with regard to their use for architectural 

 purposes. Under " Coal " is included the lignite of Bovey, and the 

 Anthracite of Bideford. T. M. H. 



Beilby, J. "Wood. Reasons suggestive of Mining on Physical Prin- 

 ciples for Gold and Coal. A Review of the Assumptions of 

 Geologists. Pp. 54. 8vo. Melbourne. 



Beloe, C. H. The Liverpool Waterworks. Ed. 3. Pp. 39. Plate. 8vo. 

 London ^ New York. [Ed. 1 in 1869, reprinted from the Architect.'] 

 About a third of the water is from wells in the New Red Sandstone. 

 Some particulars as to the depth and yield of these wells are given. 



Bewick, T. J. A Project for supplying Newcastle-on-Tyne, Gates- 

 head, and other Towns and Yillages in Tynedale with Water from 

 the Northumberland Lakes District. Trans. N. of Eng. Inst. Eng. ' 

 vol. xxiv. part 1, pp. 85-90; Discussion, pp. 90-95 (map). 



Describes the physicaP geography of the country around the North- 

 umberland Lakes (which lie on the N, of the Roman wall and the 



