APPLIED AND ECONOMIC. 193 



Neville, P. Ou the Water-supply of the City of Dublin. Proc. 



Inst. Civ. Eng. vol. xxxviii. pp. 1-43 (Discussion, pp. 44-49). 

 Dublin and the neighbourhood is now supplied, by gravitation-works, 

 with water from the Cambrian and Silurian rocks- to the south. There 

 is now but little peat left in the district. The paper contains an ana- 

 lysis of the water, and notes upon the construction of a tunnel, 4332 

 yards long, through rocks of varying character. W. T. 



NoKDENSTRoif, 0. G. Bidrag till kiinnedomen om Dalkarlsbergs 

 malmfalt. [Contributions to a knowledge of the metalliferous 

 field of Dalkarlsberg.] Geol. foren. Stockholm Forhandl. bdt. i. 

 pp. 27, 28, pi. iii. 

 Description of the workings. 



' ■ Om vigten af geologisk kunskap vid malmfyndigheters upp- 

 sokande. [On the importance of geological skill in discovering 

 ore-deposits.] Geol. fiiren. Stockholm Forhandl. bdt. i. pp. 61-G3, 

 fig. in text. ^ o 

 As an instance the arrangement of iron- and copper-ores at Atvida- 

 berg is given, showing their relations to the country-rock, which con- 

 sists of granite, gneiss, hornblende-rock, mica- schist, and protogine 

 gneiss. G. A. L. 

 . lakttagelser rorandc Solstads koppargrufva. [Solstad copper- 

 mine.] Geol. foren. Stockholm Forhandl. bdt. ii. pp. 116-120, 

 pis. v.-vii. 

 A plan, showing the mine at 13 different levels (the deepest being 

 1000 Swedish feet) , is given on a scale of 1 : 1200. Two sections are 

 likewise given. The rocks met with in the workings are gneiss, grey 

 quartz, and trap in dykes. The gneiss is the country-rock, the vein 

 being filled up with the quartz and the ore. The hade of the vein is 

 irregular, but on the whole south-westerly. G. A. L. 



OxLAND, Dr. R. Lime. Trans. Plymouth Inst. vol. v. part 1, pp. 



54, 55 (abstract). 

 Mentions some of the economic uses of limestone. 



Page, Prof. D. [Remarks on some specimens of Artificial Stones.] 

 Trans. N. Engl. Inst. Eng. vol. xxiii. j)p, 158-160. 



Refers to Chance's Patent Stone, formerly made near Birmingham by 

 melting Rowley Rag ; and Ransome's Patent Stone, prepared from ground 

 flints and a siliceous rock [Upper Greensand] from Farnham, which 

 contains silica soluble in caustic soda. W. T. 



— . Economic Geology, or Geology in its relations to the Arts 

 and Manufactures. 8vo. Edin. and Lend. Pp. xv, 336. 18 wood- 

 cuts and geol. map of the British Isles (scale 60 miles to 1 incli), 

 by A. K. Johnstone [map reprinted from Keith Johnstone's School 

 Physical Atlas, 1869 J. 

 The author divides liis work as follows : — Introduction, 7 pp. ; tho 

 Rocky Crust, 23 pp. ; Agriculture, 18 pp. ; Land Valuation, 8 pp. ; 

 Architecture, 47 pp. ; Civil Engineering, 16 pp. ; Mine Engineering, 

 1874. 



