196 ECONOMIC GEOLOer. 



Harrington, B. J. Notes on the Iron Ores of Canada. Iron,n. s. 

 vol. vii. pp. 9, 41, 70, 106. (Continnod ; see Geological Eecord 

 for 1875, p. 121.) 

 Under the headings : — Bog Iron Ore ; Spathic Iron Ore ; Clay Iron- 

 stone ; Province of Ontario ; Province of Quebec, New Brunswick, and 

 Nova Scotia ; Clementsport ; General Remarks. W. T. 



Hayter, H. Holyhead New Harbonr. Proc. List. Civ. Eng. vol. xliv. 

 pp. 95-112. Discussion, pp. 113-130. 



The stone employed was quartz-rock from Holyhead Mountain. 

 The methods of working the stone are described, and the various parts 

 of the quarries shown in woodcut plans and elevations. W. T. 



Heatherington, A. The Gold Yield of Nova Scotia, 1 861-75. Pp. 8. 



8vo. Halifax, N. S. 

 Consists of annual statistics, showing that Nova Scotia is a gold 

 region of importance. 



Houghton, Jacob. The Ancient Copper Miners of Lake Superior. 

 Iron, n. s. vol. viii. pp. 168, 199. 



Hull, Prof. E. A Scheme of Water Supply for Tillages, Hamlets, 

 and Country Parishes of the Central and Eastern Counties. Quart. 

 Journ. Sci. n. s. vol. vi. pp. 304-317 ; and Bej). Brit. Assoc, for 

 1875, Sections, pp. 249, 250. 

 Proposes to apply for this purpose the information published on the 

 Geological Survey Maps. The permeable strata over the area in ques- 

 tion have a thickness of from 1275 to 5600 feet ; the impermeable 

 strata of from 2110 to 5030 feet. The rocks described range from 

 London Clay to Permian inclusive. The character of the water of each 

 permeable bed is described, and the means of obtaining that water by 

 wells discussed. W. T. 



Humber, W. A Comprehensive Treatise on the Water Supply of 



Cities and Towns. Pp. xiv, 378 ; 32 plates, 257 woodcuts. 4to. 



London. 



Chap. iv. Springs, and the Water-bearing formations of various 



districts (with geological sections). Chap. vi. On the vSelection of 



Sources of Supply. Chap. vii. Wells (with geological sections). W. T. 



Hunt, R. Mineral Statistics of the United Kingdom of Great Britain 

 and Ireland for the year 1875. Pp. xv, 282. 8vo. London. 



Huxham, Hort. On some Particulars of Boring with the Diamond 

 Drill. Proc. S. Wales Inst. Eng. vol. ix. pp. 201-220. 



Includes two tables : — 1 . Details of some borings in England, show- 

 ing the progress through different strata, by Mather and Piatt's boring- 

 machinery. 2. The results obtained in some of the bore-holes of the 

 Diamond Rock-boring Company. R. B. N. 



