320 Reviews — Geology of Canada. 



(C) Department of Mines, Canada: Mines. Beanch, 1912, 



PrRiTEs IN Canada. By A. W. G. Wilson, pp. xi + 202, with 

 27 plates, 26 tables, 29 figures in the text, and 1 map. 



This report, while outlining the pyrites resources of Canada, has 

 for its object the promotion of a furtlier development of these 

 resources. It is pointed out that, if a steadj' supply of a uniform 

 grade of ore were assured, more than four times the present production 

 in Canada of this ore would find a ready market. This market might 

 be still further increased on account of the rapid expansion of the 

 sulphide pulp industry in Canada. 



The book gives a short account of the chemical and physical 

 properties of the chief sulphur ores, and notes on the mining and 

 marketing of pyrites. The statistics of the production of pyrites are 

 given in fifteen tables. 



The occurrence of pyrites in Canada is treated at length, some 

 fort)' prospects being described. This chapter is illustrated by an 

 admirable series of photographs and hj a map showing the positions 

 of the pyrites deposits in Eastern Canada. The same chapter contains 

 descriptions of the pyrrhotite at Sudbury, Ontario, and of the famous 

 pyrites deposits of Huelva, Spain, and of Norway and Japan. 



The remaining chapters deal with the roasting of pyrites, the 

 manufacture of sulphuric acid, and the importance of pyrites to the 

 paper-manufacturing industry. Appendices give a list of firms 

 interested in Canadian pyrites, types of furnaces used for burning 

 sulphur, a discussion of the use of pyrrhotite as a sulphur ore, and of 

 the contact process for the manufacture of sulphuric acid. 



The book is most profusely illustrated. It contains a fund of 

 information of a highly practical nature which must prove invaluable 

 to those actively engaged in the production of pyrites, while its less 

 technical matter cannot but appeal to those interested in the scientific 

 aspects of pyrites deposits. 



(D) Mineral Production, Canada, 1911-12. 



(1) A general summaryofthemineral production of Canadaduring 19 11. 



(2) Preliminary report on the mineral production of Canada during 



1912. By J. McLeish. 

 The decrease in mineral production of 1911, as compared with 

 1910, is attributed largely to the strike of coal-miners in Alberta and 

 in the Crowsnest district of British Columbia. The preliminary 

 report for 1912 shows an increased production for every important 

 mineral mined with the exception of petroleum. The working of 

 the nickel-copper ores of the Sudbury district of Ontario in 1912 

 shows a greatly increased output. Small shipments of nickel ore 

 were also made in 1912 from the Alexo Mine at Kelso in the 

 Nipissing district. 



(E) Geological Survey, British Columbia. 



Map 62a (to accompany Memoir 34). Nelson and vicinity, West 



Kootenay, British Columbia. 



A geological and topographical map of an area of about 120 square 



miles, on the scale of 1 mile to the inch, with contours at intervals 



