C—3

13

alkaline hydrates; alkaline carbonates, acids, HCI, H 2 S0 4 , HN0 8 , HC 2 H 3 0 2 , H 2 C 4 H 4 0 6 ; haloid salts, HCN, KCN, I, As 2 0 3 ,S0 2 . (Na 2 5 2 0 3 +5H 2 0). Text-book : Park's " Laboratory Instructions in Assaying and Practical Chemistry," 7s. 6d. Theoretical Chemistry. —(Lecturer, Mr. W. A. MacLeod, 8.A., B.Sc.) Principles of Chemistry and Chemical Philosophy. —Atoms, molecules, vapour-density, quantivalence, chemical formulae. The Elements. —(1.) Their history, occurrence, preparation, properties, uses. (2.) Compounds of the elements, their history, preparation, properties, uses, &c Metallurgy of Gold and Silver. —(Lecturer, the Director.) (1.) Ore-crushing and -pulverising machinery— a, rock-breakers ; b, stamps; c, mills, rolls, &c. (2.) Metallurgy of gold— a, amalgamation on copper-plates, in pans, &c ;b, chlorination processes and operations; c, leaching processes (Cassels's, &c). (3.) Metallurgy of silver— a, smelting and amalgamating ores ; b, smelting —reduction with lead and fluxes; c, amalgamation in pans with mercury — use of chemicals; d, leaching with solvents—sea-water or brine, ammonia, sodium hyposulphite, alkaline cyanides ; c, oxidizing and chloridizing roasting. Text-books: Eissler's "Metallurgy of Gold and Silver"; Gordon's "Mining and Engineering." Physics. —(Lecturer, the Director.) Fundamental ideas of matter and energy ; conditions of matter; gravitation; mechanical powers; sound ; light; heat; magnetism ; electricity; chemistry; physiology and health. Practical Astronomy. —(Lecturer and Instructor, the Director.) The ecliptic ; equinoxes; meridians ; longitude ; latitude ; altitude ; declination ; right ascension ; azimuth; use of Nautical Almanac ; polar distance; zenith distance ; hour-angle; sidereal time ; mean time ; solar time ; parallax ; refraction ; retardation; acceleration; convergency of meridian; determination of meridian by star and sun observations, by single altitudes and greatest elongation of circumpolar stars; use of star charts ; calculation of hour-angle, azimuth, and altitude of celestial bodies for any time and place ; determination of latitude by meridian altitudes; determination of time by star transits and sun observations. Mechanical Draiving. —(lnstructor, Mr. E. J. Williams.) Use of scales; printing and lettering; outline drawing; shading; colouring; drawing to scale from copies and objects portions of machinery and woodwork, showing plans, elevation, and sections. Special Classes are held for the instruction of candidates for the Government mine-managers', battery superintendents', and engine-drivers' certificates. First term—First Monday in February to 30th April; second term —9th May to 20th August; third term —9th September to 20th December. Registration of membership —10s. per annum; class fees—ss. per term for each subject taken up. Scale of Charges for Public Assays and Analyses. S, s. d. Bullion assays ... ... ... ... ... ...050 Assays of quartz, tailings, or concentrates ... ... ... 050 Examination and determination of rocks and minerals ... ... 0 5 0 Assay of lead-and tin-ores, each ... ... ... ... 050 „ iron- and manganese-ores ... ... ... ... 0 10 0 „ copper-and antimony-ores ... ... ... ... 0 10 0 „ zinc-, mercury-, and bismuth-ores ... ... ... 0 10 0 „ gold- and silver-ores, with parting assay ... ... ... 050 Analysis of limestone and calcareous freestone | ,?, '" nin n „ coals and fuels, each ... ... ... ... 0 10 0 rocks and soils j^gf 6 ;-;-; ;;; ;;; ;;; io g „ fireclays and slags ... ... ... ... ...100 „ manures ... ... ... ... ... ...200 waters ( com P lete 3 0 0 waters (partial 2 0 0 „ nickel-, cobalt-, and chrome-ores ... ... ... 010 0 „ concentrates ... ... ... ... ... 1 10 0 „ complex sulphide ores, &c. ... ... ... ... 110 0 Experimental Plant. Eeports of working tests of parcels of gold- and silver-ores, concentrates, and tailings, from 1 to 3 tons :— (1.) By Cassel cyanide process: Wet- or dry-crushing— a, by percolation; b, by agitation. (2.) By amalgamated copper-plates. (3.) By amalgamation in pans : Wet- or dry-crushing— a, by raw amalgamation in charges; b, by Washoe process with chemicals (a, hot pan-amalgamation; b, after chloridizing roasting). (4.) Chlorination: Small barrel tests. Cost of treatment (minimum charge): £5 per parcel not exceeding 1 ton; £3 per ton for tailings.