APPLIED AND ECONOMIC. 195 



By pumping, the water in the shaft is kept 8 feet below the level of the 

 river ; yet the water of the shaft and that of the river differ in tempe- 

 rature and quality, showing that there is no connexion between them. 

 Analyses of the wat^r are given. The permanent works consist of 

 wells and a gallery, driven to intercept the subterranean watercourses. 

 (From abstract in Proc. Inst. Civ. Eng. vol. xxxix. pp. 383-386.) 



W. T. 



Sjogren, A. Anteckningar i praktisk geognosi. I. Om nyttan och 

 nodvandigheten af att S grufkartorna noggrannt angifva bergar- 

 tema. [Suggestions in practical geology. On the usefulness and 

 necessity of accurately mapping the rocks in mining plans.] Geol. 

 foren. Stockholm Porhandl. bdt. i. pp. 169-174, pi. xvi. 



As an instance gives a description, with figures, of the " Stor " or 

 great mines near Persberg. 



Smith, E. J. Agricultural Geology (No. 2. Northern Division). 



Trans. Inst. Surveyors, vol. vi. pp. 323-341 (Discussion, pp. 341, 



342). 

 Describes the range, elevation, soils, mineral products, <fec. of the 

 Palaeozoic rocks in the northern counties. 



Smyth, W.W. Address of the President for 1872. 59th and 60th 



Ann. Reps. Roy. Cornwall Geol. Soc. pp. 7-15. 

 Points out the lines of inquiry for members. 



. Address of the President for 1873. Ibid. pp. 31-42. 



Shows that there is no reason for saying that the mineral treasures 

 of Cornwall are exhausted, whether from want of new discoveries or 

 from the depth of the mines, and refers to discoveries of tin in Australia 

 and Van Diemen's Land, and the reworking of lead-slags at Laurium 

 in Greece. C. Le N. F. 



Squarey, E. p. Agricultural Geology. Trans. Inst. Surveyors, vol. vi. 



pp. 9-23 (Discussion, pp. 23-46). 

 Describes the soils overlying the various formations in ..England 

 and Wales, dealing chiefly with the Secondary and Tertiary rocks. 



YoELCZER, Dr. A. On the Composition of Waters of Land Drainage. 



Journ. Roy. Agric. Soc, scr. 2, vol. x. pp. 132-165. 

 Gives analyses of 70 samples of water from Broadbalk Field, Roth- 

 ampsted. 



VoM Rath, — . [Sulphur in Sicily &c.] N. Jahrb. Heft i. pp. 62-66. 



A letter enclosing extract from Prof. Trautschold, of Moscow, on the 

 treatment of sulphur at Lercara, and on the industries of the Lipari 

 Isles. Vom Rath adds a description of Vulcano. F. W. R. 



WiKOFF, Hon. A. L. Ohio Statistics for 1873. Coll. Guard. 



vol. xxvii. p. 746. 

 •A rhume from the * American Manufacturer' of the original 

 Report, which concerns itself chiefly with commercial details of the 



o2 



