CONTENTS. V 



PAGE 



VII. The Art of Dyeing, continued 199 



VIII. A Theory of Accidental and Complementary Colours. By 

 Charles Tomlinson, Esq. . 208 



IX. The Atmosphere in relation to Malaria . . . . 217 



X. State of the Austrian and Hungarian Mines. By Messrs. Foy, 



Harle, and Gruner 221 



XI. Analyses of Books . . . . . . . .224 



Transactions of the Royal Society of Edinburgh. Vol. XIII. . ib. 



XII. Scientific Intelligence 226 



1. British Association for the Advancement of Science . . ib. 



2. Pharmacy, &c 229 



3. Impurity of Zinc and Sulphate of Zinc .... 231 



4. Utility of Carbonate of Barytes ... .' . 232 



5. Adulteration of Nitrate of Silver ib. 



6. Combination of Sulphuret of Lead with Chloride of Lead ib. 



7. Chloro-Sulphuret of Antimony ib. 



8. Gallic Acid in Crystals . . . . . .233 



9. Action of Oxalic Acid upon Sulphate of Iron, &c. . . ib. 



10. Ferrocyanodide of Ammonia ...... ib. 



11. New method of reducing Litharge employed at Freiberg . 234 



12. Absorption of Oxygen by Platinum and Iridium . . ib. 



13. Compounds of Bromine and Oxygen .... ib. 



14. Triple Compounds of Osmium, Iridium, &c. . . . 235 



15. Carbonate of Iron of Traversella . . . . . ib. 



16. Method of detecting minute quantities of Sulphur . . 236 



17. Tin discovered in Brittany ...... ib. 



18. Employment of Iron in Suspension Bridges. By M. E. Martin 237 



19. Oil of Canella ib. 



20. Table exhibiting the Comparative Weight of Sea Water at 



different places in Holland 239 



21. Essence of Turpentine ....... ib. 



22. New Books . . ib. 



23. Meteorological Journal . . . . . . 240 



No. XXll.'^Octoher, 



I. Biography of M. Le Comte Lagrange. By M. Delambre . . 241 



II. Experiments on the Combination of Sulphuric Acid and Water. 



By Thomas Thomson, M.D., F.R.S. L. &E., &c. . . 252 



III. Important Facts derived Mathematically from a General Theory, 



embracing many results in Chemistry, &c. By T. Exley, A.M. 267 



IV. A Theory of Accidental and Complementary Colours. By 



Charles Tomlinson, Esq., concluded . . . . . 288 



V. Economical Mode of forming Hy permanganate of Potash. By 



William Gregory, M.D., F.R.S.E. . . . .297 



VI. Analysis of Tartar Emetic. By Mr. Thomas Richardson . . 299 



VII. Catalogue of Plants collected at Bombay. By John Graham, Esq. 300 

 VII. Scientific Intelligence . . . . . ... 303 



British Association for the Advancement of Science . . . ib. 



No. XXl\l.—Novemha\ 

 I. Notice of Carburet of Potassium, and of a New Gaseous Bi-carburet 



