THE TECHNOLOGIST. [July 1, 1865. 



IV CONTENTS. 



PAGE 



Quicksilver Mines of New Almaden, California. By B. Silliman, jun. 170 

 On the Reversion and Restoration of the Silkworm. By Captain 



Thomas Hutton, F.G.S., of Mussooree, N.W. India . . . 175, 216 



Cork and its Uses. By John R. Jackson 193 



French Macaroni. By J. Bernis 209 



Manufacture of Gloves in the United States - 212 



The Resins, Gums, and Gum-Resins of Victoria .... 227 

 The Circulation of Sap in Trees, and the Formation of Maple 



Sugar 230 



On the New Chinese Silkworm lately introduced into Europe. 



By Lady Mary Thompson 232 



The Cotton Plant. By Major Trevor Clarke, F.R.H.S. . . .239 

 The Gold Mines of Canada, and the Manner of Working Them. 



By T. Sterry Hunt, F.R.S .252 



Properties and Uses of Gun -Cotton. By W. Procter, M.D. . . 257 



Furs and their Preparations. By Dr. Parmelee .... 263 

 Past and Present State of the Silk Industry of Bale. By Mr. 



Burnley, Her Majesty's Secretary of Legation ... . . . 267 



Electro-Plating 286 



A Visit to the Cossipore Sugar Works, Bengal . - . . . 287 

 On the Use of the Dentalium Shell by the Natives of Vancouver 



Island and British Columbia 290 



The Cinchona Bark of British India. By Dr. J. E. De Vry . . 292 

 The Tinnevelly Pearl-Banks. By Clements R. Markham, F.S.A., 



F.R.G.S 295 



The Cocoa-Nut of the Seychelles Islands, or Coco-de-mer. By 



George Clark , . 302 



Colonial Tweed and Cloth Manufactory at Sydney . . . 307 



On the Botanical Origin of Gamboge. By Daniel Hanbury, F.L.S. . 310 



The Cultivation of Medicinal Plants at Mitcham. By Thomas T. . 



P. Bruce Warren 312 



Iron Minium 316 



The Sponge Fishery of the Ottoman Archipelago. By M. Biliotti, 



British Vice-Consul at Rhodes 317 



Essential Oils from Indigenous Plants of Victoria, adapted for 



Use in Medicine, Perfumery, etc 322 



Tin and its Uses 326 



The Gold Fields of Ireland 335 



Wood for Railway Sleepers 340 



On the Dentalium Shell and Shell-Monet. By Edward T. Stevens . 355 



Irish Bog- Oak Ornaments . : 358 



foreigf and home fishing vessels and boats 361 



The Oak-Feeding Silkworm of China. By T. T. Meadows . . 368 

 The Supply of Turpentine and Resin. By the Editor . . .370 



Ostrich Breeding 376 



The Commercial Uses of Flowers and Plants. By Eugene Rimmel. 



{Illustrated.) 383 



