9] 
CHEMISTRY— 
color, etc., of, Spring, 1, 348; and 
ozone, constitution, Traube, vi, 
474, 
phosphide, Retgers, ix, 148. 
Hydrosulphides, metallic, Linder 
and Picton, iii, 332. 
Hydroxylamine, constitution, Kolo- 
toi, vi, 71; free, de Bruyn, iii, 
151, iv, 258, v, 480; Bruhl, vii, 
235. 
Hyponitrous acid, Thum, vii, 317. 
Indigo-carmine, synthesis of, Hey- 
mann, ii, 257. 
Inorganic salts, fusing points, Meyer 
and Riddle, vii, 130. 
Iodates, alkaline, Wheeler and Pen- 
field, iv, 123. 
Iodic acid, action of reducing agents 
on, Roberts, vii, 422; viii, 151. 
Iodine, base-forming function of, 
Meyer and Hartmann, vii, 399 ; 
new bases, Meyer and Hartmann, 
viii, 503. 
in haloid salts determined by 
arsenic acid, Gooch and Brown- 
ing, v, 334. 
in its solutions, chemical con- 
dition, Gautier and Charpy, i, 241. 
Ions, color of, Ostwald, v, 347 ; Lea, 
ix, 307; electromotive activity of, 
Nernst and Pauli, v, 156. 
Iron carbonyl, Mond and Linger, 
iii, 151 ; in water gas, Roscoe and 
Scudder, iii, 152. 
manganese and calcium, separa- 
tion, Riggs, iii, 135. 
and nickel-tetracarbonyl, Mond 
and Quincke, ii, 424. 
Isomorphism, Retgers, iii, 68. 
Lactic acid resolved into optically 
active consituents, Purdie and 
Walker, v, 66. 
Levolactic ferment on dextrose, 
rhamnose and mannitol, Tate, 
vii, 795. 
Lead tetracetate, Hutchinson and 
Pollard, vii, 75; tetrachloride, 
double salts, Wells, vi, 180. 
Lummer-Brodhun prism in colori- 
metry, Kriiss, viii, 66. 
Magnesium chloride separated from 
the chlorides of sodium and potas- 
sium, Riggs, iv, 103. 
Manocrymeter, De Visser, vii, 130. 
Masrium, new element, Richmond 
and Off, v, 66. 
Mercuric sulphide, change of black 
to red, Spring, 1, 342. 
Mercurous chloride, size of the 
molecule, V. Meyer and Harris, 
viii, 506. 
VOLUMES XLI-L. 523 
CHEMISTRY— 
Mercury, detection in 
poisoning, Lecco, ii, 68. 
Metallic carbonyls, Mond, iv, 422. 
Metals, fluidity below their melting 
points, Spring, ix, 467. 
and oxides in the electric are, 
fusion and volatilization, Moissan, 
vii, 131. 
Molecular formula of hydrogen 
fluoride, i, 514; formulas of 
liquids, Ramsay, vii, 396. 
mass determined from rate of 
evaporation, Kronberg, vi, 296; 
determinations of by means of 
solid solutions, Van’t Hoff, i, 152; 
new principle of determining, 
Nernst, i, 239; titration method 
for determining, Kiister, viii, 65. 
Molybdenum and tungsten, new 
ee compounds, Péchard, iii, 
cases of 
Motochemistry, Molinari, vii, 233. 
Nickel and cobalt, atomic masses, 
Winkler, ix, 312. 
Nitrates, iodometric determination 
of, Gooch and Gruener, iv, 117; 
Gruener, vi, 42. 
Nitric acid, reduction by ferrous 
salts, Roberts, vi, 126. 
Nitro-copper, Sabatier and Sende- 
rens, vi, 394. 
Nitrogen, anomaly in the density, 
Rayleigh, viii, 504 ; see ARGON. 
explosive haloid compounds, 
Seliwanow, vili, 67. 
group, new element, Bayer, ix, 
230 
preparation and properties of 
pure, Threlfall, vi, 476. 
and air, refractive indices of 
liquid, Liveing and Dewar, vi, 478. 
monoxide, Smith, vii, 475 ; Vil- 
lard, ix, 57; boiling and freez- 
ing points, Ramsay and Shields, 
vi, 297. 
peroxide, dissociation, Ostwald, 
Hg tO =A b, 
trioxide, Lunge and Porschnew, 
ix, 56. 
Nitro-metals, Sabatier and Sander- 
gens, vii, 478. 
Osmotic experiment, Nernst, i, 152. 
pressure, Planck, i, 151; Boltz- 
mann, i, 512; measurement of, 
Tammann, iv, 71. 
Oxidation of nitrogen by the spark, 
Lepel, iv, 421. 
Oxygen from calcium plumbate, 
Kassner, vii, 398. 
extraction from air, Kassner, 
i, 514. 
