11 



VOLUMES XXXI-XL. 



687 



CHEMISTRY. 



Manganese, determination, Rai- 

 kow and Tischkow, 33, 2 



— separation from iron. San- 

 chez. 33. 



— volatile oxide. Lankshear. 

 36, 410. 



— volumetric method. Metzger 

 and Marrs. 32, 61. 



Mercuric chloride, rate oi re- 

 duction. Linhart. 35, 353. 



— oxide for standardizing vol- 

 ui; utions, Abelmann, 



Mercury determination, lamie- 

 ".'■ 

 sothorium, Marckwald, 31, 



tallic elements. relative 

 abundance. Clarke and 



37i 

 Metals, passive state. Grave. 

 3 2 * 393. 



— solution in dissolved iodine. 

 Van Name and Bosworth, 32, 



Mixture-, quantitative chemical 

 analy-is. Friedenthal. 31, 568. 

 n. atomic weight, Leduc. 

 38. 



— krypton and xenon, mona- 

 tomicity, Ramsay. 33, 37S. 



Nickel and cobalt sulphides. 



Thiel and Gessner, 37, 475. 

 Nitric acid, detection. Sen and 



Dey. 33. 



— oxide, determination. Bau- 

 disch and Klinger, 35, 190. 



Nitrogen, active form of. Strutt. 

 35, 452; Tiede and Domcke. 

 37. 



— fixation of atmospheric, Lan- 



39, 676. 



— modification by electric dis- 

 charge, Strutt. 32, 65, 318. 



Nitroglycerine, behavior when 

 heated. Snelling and Storm. 

 35. 



.ium tetroxide a< 

 I lofmann. 35, 

 fate permanganate pr> 

 Ward, 33. 



acidic, with sodium 

 de. heat of combination. 

 Mixter, 32, 202. 



— heat tion and 

 merization. Mixter. 40, 23. 



Ozone, 32, • 



CHEMISTRY. 



Per-acids and their Salts, Trice, 

 34. 573: 36, 7?- 



Perchloric acid, preparation, 

 Willard, 34. ?:-■ 



Periodates, estimation ou 

 M filler and Wegelin, 37, 273. 



Periodic law and thermochem- 

 istry. Mixter. 37, 510. 



Petroleum oils, high boiling, 

 McAfee, 40, 443. 



Phosphorus, luminosity of. 

 Twiss, 35. 3^2. 



— new modifications, Bridge- 

 man, 38, 361. 



— pentoxide, action of water 

 on. Balareff. 31, 331. 



— red. formation, Stock. Schra- 

 der and Stamm, 34, sqy. 



— vaDor. dissociation, Stock 

 and Gibson, 35, 97. 



Platinum, cold, etc., detection 



and separation, Browning, 40, 



340. 

 Polonium, see Polonium. 

 Portland cement, Janecke, 33, 



279. 

 Potash from feldspar, Cushman 



and Coggeshall. 39, 311. 

 Potassium ferricyanide, Hauser 



and Biesalski, 35, 189. 



— and sodium, separation, Hill, 

 40, 75- 



Prout's hypothesis, Harkins and 

 Wilson, 40, 78. 



Radio-elements and the periodic 

 law. Soddy, 35, 538. 



reactions of, Fajans and 



Beer, 37, 1 ro. 



Radium, see Radium. 



Rare Earths. Levy. 39, 312. 



Selcnic acid, use as reagent, 

 Gooch and Blumenthal, 35, 

 54; Blumenthal. 35, 93. 



nium, determination. Meyer, 

 37, 347- 



Silica, dehydration and recov- 

 ery, Gooch, Reckert and K'u- 

 zirian, 36, 598. 



— determination of. Kuzirian, 

 37, 61. 



Sili :omposition, Hem- 



pel, 35, 32 r. 



— fluorides, etc., detection, 

 Browning, 32, 240. 



Silver, anodic potentials of, 

 dy. 40, 2S1, 41 



