IV CONTENTS. 



PAGE 



The Trade in Madder. By the Editor . 151 



Pine-Apple Leaf Fibre ....... . 



Eattans and their Uses. By Arthur Robottorh ] 161 



On the Natural History op the Pearl Oyster of Ceylon. By E. F. 



Kelaart, M.D., F.L.S. 166 



New Edible Roots. By the Editor 177 



Notes on Galls. (With Illustrations.) By M. C. Cooke . . . .181 



Products of New Granada. By William Bollaert, F. E.G. S. , .187 



Everlasting Flowers. ByT. D. v Rock ... ... 188 



On the Amount of Starch in Eice. By Dugald Campbell, F.C.C. . . 191 



The Native Farinas of Jamaica. By W. W. Anderson . . . 193 

 On the Natural History of the Lac Insect (Coccus Lacca). By H J. 



Carter, F.E.S . .196 



Some Eemarks upon Shellac, with an Especial Eeference to its Present 



Commercial Position. By John Mackay .... . . 204 



Botanical Society of Canada ...... . 209 



The Shea Butter of Africa, and of other Bassias. By the Editor . 217 



Mother of Pearl and its Uses. By the Editor 219 



The Sources of Manna. By the Editor 225 



Proceedings of the Eoyal Society of Tasmania 229 



Insect Medicines— Cantharides. By the Editor ...... 231 



Japan Varnish 234 



The Sponge Fishery of the Bahamas. By the Editor .... 237 

 Culture of Broom Corn in the United States, and the Manufacture 



of Brooms. By the Editor 239 



The Earth or Bock Oils of America. By the Editor .... 244 

 Economic Products of the Tisso (Bdtea Frondosa). By M. C. Cooke, 



F.S.S. 251 



The Guarana of Brazil 252 



The Lace Bark or Gauze Tree . 254 



Varieties of Sugar. By the Editor 257 



The Gold Pen — Its History and Manufacture 263 



On Peat-Soil in Combination with Seaweed and other Substances as 



Manure. By George Parson 268 



The British Trade in Shells. By the Editor 270 



Hippopotamus Teeth or Tusks. By Thomas D. Rock. ( With an Illus- 

 tration) 271 



On Poisonous Fishes and Fish Poisons. By Hon. Eichard Hill . 277, 299 

 On Lighthouse Illumination — The Electric Light. By Professor Faraday, 



D.C.L., F.E.S 285 



Commercial Products of the Asphodel. By Sir W. J. Hooker, K.H., F.R.S. 288 



Notes on Tanning Substances. By Walter G. Fry ■ 289 



Pine-Wool. By M. C. Cooke, F.S.S 304 



The Copal of Eastern Africa. By Capt. Richard F. Burton . . . 306 

 Dugong Oil. By the Editor. (With an Illustration) . . . .311 



Murexide. By F. Crace Calvert 313 



Silk Cottons. By the Editor 315 



Eimmel's Perfume Vaporizer. (With an Illustration) .... 318 



On Vegetable Waxes. By M. C. Cooke, F.S.S .321 



Mauve and Magenta. By Eobert Hunt, F.E.S. 327 



The Potato and its Commercial Products. By the Editor . . . 331 



The Bead-Trade of Eastern Africa 341 



The Ordeal Eoot of Goumbi. By Paul B. Du Chaillu .... 344 

 Monkey Bread Nuts, or Fruit of the Baobab. By Thomas D. Eoek. 



( With an Illustration) 346 



Notice of Economic Products exhibited at Ironmongers' Hall. By T. D. 



Eock 350 



The Tusseh Silk Moth. By M. C. Cooke, F.S.S. (With an Illustration) . 354 



The Vegetable Products of Siam. By Sir E. H. Schomburgk, K.C.H. . 355 



The Mineral Oils of America 362 



Estimation of Tannin in some Barks of British Guiana. By John 



Mulligan 367 



The Tincal of Asia, and its Applications. By Arthur Robottom . . 370 



The Tortoiseshell of Commerce. By the Editor 375 



Caoutchouc, or India Rubber, By Benjamin Nickells .... 382 



Antimony. By T. D. Rock 388 



Miscellaneous and Scientific Notices :— 63, 96, 128, 157, 160, 223, 255, 320, 352 



Reviews, New Works Announced, &c. . . . 31, 64, 128, 158, 256, 320 



Correspondence . 126, 158 



