INDEX TO ARTICLES. 409 



Ether, manufacture of. Soubeiran. Cliem.. Jan. 



Etherification. Velpeau. C. R., March 4. 



theory of. Williamson. Brewster, Nov. 



Extraction of gold and silver from their ores by the wet way. Percy. Mia. Jour., Jan. 

 26, Feb. 2. 



Extraction of gold from copper ores containing small quantities. Chem., Jan. 



Fibrine in the blood, decrease of, by motion. ~Corne. C. K. ; March IS. 



Fluorine, estimation of. Rose. Chem.. May. 



Gold and silver, alloys of. Chem.. March, ci post. 

 '' refining of. Chem. Gaz., Oct. 



Hydrogen, use of, in the analysis of mineral.'?. Rivot. Jour, de C. et de P., Oct. 

 passage of, through solid bodies. Pogg., No. 10, 1>4<J. 



Ice-p'.ant, \vatery secretion of. Yolcker. Brewster, May. 



Identity ofaniinal and vegetable neutral nitrogenous substances. Keller. Chem., June. 



Iodide of potassium, decomposition of metallic acids by. Schbnbein. Jour, de Pharm 

 April. 



Iodine and phosphorus, combinations of. Corenwinder. Jour, de C. et de P., Oct. 



Iron, process for the quantitative determination of. Penny. Chem., Oct. 

 " and phosphorus, combinations of. Chem., Oct. 



Lactic acid, artificial formation of. Strecker. Chem. Gaz.. Nov. 1. 



Lead, peroxide of, compound with ozone. Schonbein. Pogg., No. 10, 1349. 



Leucine, constitution of. Hunt. Sill., Jan. 



Magnesia, alcoholates and nitrates of. Chem.. July. 



Manures, disinfection of. Callond. Chem., March. 



Mercury, the oxychlorides of. Roncher. Jour, de C. et de **., Dec., 1849. 



Minerals, artificial formation of. in the wet way. Jour, de C. et de P., Oct. 



Morphine, precipitation of, by charcoal. Diesel. Chem. Gaz., Nov. 1. 



Nitrates of iron. Ordway. Sill., Jan. 



Nitric acid with starch to detect iodine in mineral waters. Casaseca. C. R., June 24. 

 Chem., Aug. 



Nitric acid, product of the action of, on woody fibre. Porter. Sill., Jan. 



Nitro-prussides. Playfair. Brewster, March, April, May, Oct. 



Oils from the distillation of wood. Cahours. C. R., March IS. 



Oxide of carbon gas. C. R., April 22. Chem., June. 



Phosphoric acid, proportion of, in some natural waters. Volcker. Chem., Oct. 



Phosphorus, amorphous state of. Schrotter. C. R., July S. Chem., Oct. 

 poisoning by. Lassaigne. Chem., May. 



Potash, action of, on caffein. C. R.. Jan. 7. 



of commerce, valuation of. Jour, of Arts., Sept. 



Protein compounds, reagent for. Millon. Chem., Oct. 



Quinquina, preparation of extract of. Boudet. Chem., May. 



Researches on the organic radicals. Franckland. Chem. Gaz., March 15. 



Resin and water gas. Fyfe. Min. Jour.. July 27, et post. 



Salts, new, of chromic acid. Brewster. No. 241. 



" of the organic alkaloids. Chem. Gaz., Sept. 1, 16. 

 " in the excrements of cholera patients. Pogg., No. 2. 



Series of insoluble alkaline phosphates and arseniates. Rose. Chem., May. 



Soap-test. Campbell. Chem., Oct. 



Strychnine. Arm. de C. et de P., Dec., 1849. 



Succinic acid. C. R., Jan. 21. Chem., Nov. Chem. Gaz., Nov. 1. 



Sugar, reagent for. C. R., March 18. 



Sulphate of quinine, process for testing the purity of. Chem. Gaz., Jan. 1, April 15. 

 of strontia, crystallization of. C. R., April 1. 



Timber, preservation of. Chem.. Jan. 



Tin, new mode of estimating. Mene. Chem., Sept. 

 " covering metals with. Chem., Nov. 



Tungsten, atomic weight of. Chem. Gaz., Oct. lo. 



Vegetation, nitrogenous principles of, as sources of artificial alkaloids. Phil. Trans., 

 Part 1. 



Xanthic acid, occurrence of a substance related to, in the animal system. Chem. 

 Gaz., May 15. 



GEOLOGY. 



Andes, structure of the crystalline rocks of. Min. Jour., March 16, 23. 

 Belemnite and Belemnoteuthis. Mantell. Brewster, July. 

 Beudantite, crystalline firm of. Brooks. Brewster, Nov. 

 Bones, fossil, from near Memphis. Wyman. Sill., July. 

 Bone caverns of Li Tour. ?, T arcel de Serres. C. R . May 27. 



