88 Scientifio Intelligence, 



6. Report of the Section of Chemistry and Mineralogy^ by G. 

 C Hoffmann. Part R, Ann. Rep. Geol. Sarv., Canada, 1896. — 

 This report, which is largely devoted to technical analyses and 

 assays, the analyses being chiefly of a series of marls, contains, 

 however, some notes of general interest on the occurrence of 

 minerals in Canada. We note the following : 



(].) Celeslite occurs in a vein two feet wide cutting lime- 

 stone in the township of Lansdowne, Leeds Co., Ontario. Is at 

 times quite pure, though often associated with calcite and galena. 

 Colorless, sometimes pale bluish or reddish, semi-transparent : 

 crystalline, though distinct crystals are not mentioned. An 

 analysis by Mr. R. A. A. Johnston gave : 

 SrO BaO CaO SO3 



56-31 tr. O'll 43-51 = 99-93 



(2.) Tetrahedrite containing lead, from the Antelope claim 

 Kaslo Slocan camp. West Kootanie Dist., Brit. Col., occurs asso- 

 ciated with galena, sphalerite, pyrite and quartz. Massive, iron- 

 gray in color. Sp. gr. 5-08. Analysis by Mr. R, A. A. Johnston, 

 after deducting quartz, gave 



Sb ' As Cu Ag Pb Zn Fe S 



28-22 -23 22-14 11-20 9-38 6-22 '93 21-68 = 100-00 



(3.) Leucite occurs in smoke-gray, sub-translucent crystals up 

 to 2-5°°^ in diameter, embedded in a dark gray rock which was 

 found as bowlders in the auriferous gravel of the Horsefly Mine 

 on Horsefly River about seven miles above its entry into Quesnel 

 Lake, Cariboo Dist., Brit. Col. l. v. p. 



7. Les Mines (V Or du Transvaal^ par L. De Launat. 8°, 

 540 pp., 11 pL, 81 fig. Paris, 1896 (Baudry & Cie). — The great 

 prominence that the gold mines of the Transvaal region have 

 assumed in the past few years, due tt their great extent and 

 wonderful richness and to the political complications to which 

 their wealth has led, renders the appearance of this work especially 

 well-timed. 



The first portion of the book is devoted to a general descrip- 

 tion of the country, the climate, productions, means of communi- 

 cation, a description of the chief towns, its history and a very 

 full account is given of the organization of the mining industries 

 from financial, legal and economic or industrial standpoints. The 

 second part comprises a geological account of the ore deposits, 

 their origin and method of occurrence, while a third portion de- 

 scribes the methods of mining, the treatment of the ores and the 

 various metallurgical processes employed. In conclusion the 

 author gives in a general resume the present state of the mining 

 industry and its probable future. 



As the work is well illustrated and written in a style that is 

 neither too technical nor judicially severe, it will prove of value 

 not only to the scientific expert and mining engineer, but to that 

 portion of the general public as well who are interested in the 

 region. l. v. p. 



