APPLIED AND ECONOMIC. 191 



IIerter, Paul. Zeit. deutsch. geol. Gesel. Bd. xxvi. Heft 4, pp. 



935-937. 

 Letter on the recent progress of mining in Tuscany. 



Hill, J. S., and "W. Fairlet. The Coal Deposits of Great Britain, 

 and the Oolitic Coal of England, Scotland, Sweden, and Denmark. 

 Coll. Guard, vol. xxviii. pp. G70, 705, 743, 815, 851, 887, 923. 



A compilation chiefly from German sources. 



HocHSTETTER, F. YoN. Gcologic uud Eisenbahnbau. [Geology and 



Kailways.] Yienna. 

 Inaugural address as rector of the Imperial Technical High School 

 of Yienna. 



KtJHN, H. [Amber mine in East Prussia.] Zeitsch. Berg-Hiitten 

 und Salinenwesen, xxii. parts 3 and 4, pp. 139-146. 



Shafts are being sunk through Tertiary beds near Konigsberg. The 

 amber-bearing bed is found at a depth of 140 feet at Nortyken, in 

 Samland. H. B. 



Lapparent, a. de. Note sur Touvrage de M. Moissenet, intitule : 

 Parties riches des Filons. [On M. Moissenet's work on the rich 

 portions of veins.] Bull. Soc. Geol. France, 3 ser. t. ii. pp. 82- 

 85. 



Leon, E. de. The Mineral Besources of the Southern States of the 

 American Union. Iron, vol. iv. pp. 674, 706. 



Lucas, J. Horizontal Wells. A new Application of Geological 

 Principles to eiFect the Solution of the Problem of Supplying 

 London with Pure "Water. 4to. Lond. pp. viii, 86, 2 maps and 

 3 plates. [A list of Errata^ 2 pp., was issued separately.] 

 Pp. 1-15 give an account of the quality of the water supplied to 

 London, especially during 1872 and 1873. The author next treats of 

 the origin of springs and the subterranean levels of waters. He pro- 

 poses to intercept the water at the various water-bearing beds by 

 means of galleries, and to convey this water to London by gravitation. 

 The chief sources are the Chalk and the base of the Hythe Beds. Much 

 information is given as to the rainfall, yield, and quality of springs, 

 percolation, underground level of water, &c. This is collected in the 

 Tables on pp. 65-83. The result of the author's observations, and 

 his mode of making them, are given in the Appendix, pp. 49-64. W. T. 



Macadam, Dr. Stevenson. On Water Supply. Proc. Phil. Soc. 



Glasgow, vol. ix. no. 1, p. 23. 

 Nature of gathering-ground treated of pp. 31-33, but with reference 

 to contamination only. 



M'Kellar, Peter. Mining on the North Shore of Lake Superior. 

 Pp. 26. Toronto, 1874. 



