C—3

IV

Page. Alluvial Mining (Middle Island) — continued. Wilson's River and Preservation Inlet— continued. Coal Island .. .. .. .. 151 Crayfish Island .. .. .. .. 151 Cuttle Cove .. .. .. ' .. 151 The Neck and Te Whara Beach .. .. 151 Gulches Head .. .. .. .. 151 Dredging .. .. .. .. ..151-156 Sew Hoy Company .. .. .. .. 152 Sandhills Dredging Company .. .. 152 Golden Gate Company .. .. 153, 155 Golden Run Company .. .. .. 153 Pringles and Company .. .. 153, 155 Bennett and Company .. .. .. 153 Miller's Creek Dredge .. .. .. 153 Brazil and Party's Dredge .. .. .. 153 Golden Treasure Dredge .. .. .. 153 Pringle and Party's Dredge .. .. .. 153 Manuherikia Dredge .. .. .. .. 154 Hyde and Woods' Dredge .. .. .. 154 Lowburn .. .. .. .. .. 154 McLelland and Sutherland's Dredge .. .. 155 Victoria Dredge, Alexandra .. .. ..155-156 Crookson's party, Lowburn .. .. .. 156 Electric Dredge, Kawarau .. .. .. 156 Natural Gas, Inglewood .. .. .. ..156-158 Coal-mines .. .. .. .. ..158-168 North Island .. .. .. .. .. 158-159 Kawakawa Mine .. .. .. ..158-159 Hikurangi Mines .. .. .. .. 159 Waikato Mines .. .. .. .. 159 Waikato .. .. .. .. .. 159 Taupiri Extended Mine .. .. .. 159 Taupiri Reserve .. .. .. .. 159 Middle Island .. .. .. ..159-168 Collingwood .. .. .. ..159-160 Collingwood Mine .. .. .. 159 Mokihinui Mine .. .. .. .. 159-160 Cardiff Mine .. .. .. .. 160 Westport Colliery .. .. .. 160 Greymouth-Point Elizabeth Company .. 160 Blackball Colliery .. .. .. 160 Grey Valley .. .. .. .. 160-161 Brunner Mine .. .. .. ..160-161 Other Mines .. .. .. .. 161 Explosion at Brunner Mine .. .. .. 161-163 Coal-dust Explosions .. .. .. .. 164 Air of Coal-mines .. .. .. ..164-165 Use of Safety Explosives in German Mines .. 165-168 Gold-milling in California, Paper on, by E. V. Preston .. .. .. .. ..169-187 Gold-milling in the Black Hills, South Dakota, and at Grass Valley, California, by T. A. Rickard, Denver, Colorado .. .. .. .. 187-195 Training of Mining Engineers, Address by Professor Henry Louis .. ' .. .. .. .. 195-199 Action of Cyanide: Paper read before the Institution of Mining and Metallurgy, by James Mactear .. .. .. .. ..199-203 The Siemens-Halske Process on the Rand .. . .203-204 Treatment of Silver-ores .. .. ..205-206 Patent Rights granted .. .. .. ..206-244 Watson's Gold Amalgamator .. .. .. 206 Midas Gold-saving Amalgamator .. .. 206-208 An Improved Amalgamating - pan for treating Finely - divided Metalliferous Material, by Alfred Andrew Lockwood and Arthur Edward Langley .. .. .. .. 208-209 Improvements in Gold-saving Appliances, to be known as the " Sentinel Gold-Amalgamator," by Thomas Henry Davidson .. .. .. 210 Improvements in or relating to Stamp-batteries, by Newton John Suckling .. .. .. 210-213 1 lectrical Stampers for Ore-crushing, by C. Guneris Evensen .. .. .. 213

Ptg*. Patent Rights granted— continued. Improvements in Certain Descriptions of Pulverising- and Amalgamating-pans, herein entitled " Improved Central-discharge Ore-grinding Pan," by Alfred Andrew Lockwood and Arthur Edward Langley .. .. .. .. .. 214-215 Improved Means of Concentrating Ores or Other Substances, by W. J. Hammond and John Gordon .. .. .. .. ..215-219 Improvements in the Art of Centrifugal Separation of Ores and the like, by 0. B. Peck . .219-227 Improvements in the Process of, and Apparatus for, extracting Gold and Silver from Ores and the like, by the Cassel Gold-extracting Company (Limited) .. .. .. .. 227-228 Improvements in Process and Apparatus for Extracting Gold from Ores and other Auriferous Substances, by Berfcrand Chase Hinman ..228-229 An Improved Tumbler for Dredging-machines, by David Williams .. .. .. ..229-230 Improvements in Gold-dredging Machinery, by A. J. Park .. .. .. .. .. 230 Improvements in and relating to the Extraction of Metals and to Apparatus therefor, by Dr. Carl Hoepfner .. .. .. .. 230-234 Improvements in Separating Gold and Silver from other Materials, by Nathaniel Shepard Keith 234-236 Improvements in Apparatus for the Electrolytical Separation of Precious Metals from their Ores, or other Materials containing them, by Louis Pelatan and Fabrizio Clerici .. .. ..236-238 Improvements in the Extraction of Gold and other Precious Metals from Minerals and Ores containing them, by Werner Siemens . .238-239 Process of extracting Precious Metals from Ores, by Osoar Frolich .. .. .. .. 239 An Improved Process for Extracting the Precious Metals from Refractory Ores, by Christopher O'Brien .. .. .. .. ..239-240 An Improved Process for effecting the Amalgamation of Gold and the like Metals in Ores, by Emil Lawrence Opperman, Ewald Fischer, Carl Tunstill John Opperman .. .. .. 240 An Improved Method of and Appliances for raising Water from Mines or elsewhere by Means of Compressed Air, by George Lansell .. 240-242 Hydraulic Injector-funnel, by E. R. Graves .. 242 An Improved Nozzle for Distributing Water and other Fluids under Pressure, by Holmes Samuel Chipman .. .. .. .. .. 243 Improvements in Methods of and Apparatus for Placer-mining, by Edward Delavan Bronson 243-244 Mr. Heiden's Method of Extracting Gold and Silver by Electro-chemical Action .. .. 244-246 Mine-managers' Examination Papers .. 246-256 List of Mining Managers, Battery Superintendents, and Engine-drivers who have obtained Certificates under the Mining and Coal-mines Acts of 1886, 1891, and 1894 .. .. .. 257-259 Summary of Works constructed .. .. 260-262 Concluding Remarks .. .. .. 262-263 List of Works on Goldfields undertaken wholly by the Mines Department, or by Subsidies to County Councils, Local Bodies, and Prospecting Associations, in progress on the 31st March, 1896 264-267 List of Works on Goldfields constructed wholly by the Mines Department, or by Subsidies to County Councils, Local Bodies, and Prospecting Associations, and completed prior to the 31st March, 1896 .. .. .. .. 267-276 Return showing the Value of the Sales of Water, and Expenditure on and Collateral Advantages derived from the Working of the Water-races constructed and maintained by Government during the Year ending the 31st March, 1896 .. .. 277