Chaplet's, 363.
Cowles', 91, 105.
(ore-smelt-
ing), 130.
Depretz's, 104.
Electric Construc-
tion Corpora-
tion's, 137.
Gerard-Lescuyer's,

135.
Grabau's, 135.
Heroult's, 139.

Johnson's (ore -
smelting), 130.

Kleiner Fiertz's,

135.
Menges', 134.

Moissan's, 362.
Pichou's (ore-

smelting), 130.

Siemens', 131.
Temperature-limit
in, 13.
Willson's, 137.

welding, 383.

Electro-chemical equivalent, S.

Electrode, 4.

FAHLERZ, 237.

F

Fahrenheit degrees, Conversion into
centigrade, 405.

Falk-Schaag process (aluminium),

Faraday's laws of electrolysis, 7.
Farmer process (aluminium), 124.
(nickel), 396.
Faure process (aluminium), 129.
Feldmann process (alkaline earth), 82.
(aluminium), 128.
Fenwick process (tin-plate scrap), 321.
Ferro-aluminium, 106.

-chrome, 268.

-manganese,

372.

Fischer process (magnesium), 20.

(sodium), 53.

Froges, Aluminium extraction at, 156.
Fröhlich's researches (copper refin-
ing), 189.

Fromm - Mylius,

(zinc), 290.

Researches by,

Furnace, Electric (see Electric

furnace).
Perrot, 29.

cyanide process, 262.
Electric amalgamation of
(see Electric amalga-
mation).

Electrolysis of, 265.

(without amalga-
mation), 272.

-platinum, Electrolytic separa-
tion of, 264.
refining, 263.

-silver-copper, Electrolysis of,

Hammond process (zinc), 298.
Hannay process (gold), 274.
Haurd process (aluminium), 116.
Haycraft process (gold), 270.
Hayden process (copper-refining),
209.

Heinzerling process (zinc), 298.
Hemelingen Magnesium Work, 32.
Henderson process (aluminium), 127.
Hermann process (zinc), 289.
Hermite-Dubose process (alkali), 69.
Herold-Rietz process (aluminium),
117.

Héroult electric furnace, 139.
process (aluminium), 138.

(iron), 382.

Hoho-Lagrange process (electric
welding), 389.

Hornung-Kasemeyer process
(sodium), 53.
Horse-power, 10.

Cost of, 14.
House-Symon process (silver), 251.

I

INQUARTATION of gold, 263.

Ions, 3.

Iron, 374.

PARKES process (silver), 238, 287.
Patera process (copper), 178.
(silver), 239.

Pattinson process (silver), 238.
Pelatan-Clerici process (gold), 281.

290.

N

Pepys' electrical heating process, 104.
Perrot furnace, 29.

Pertsch process (zinc), 300.

Pfleger-Nahnsen process (aluminium),

117.

R

(Hoepfner), 398.

nium), 116.

Niewerth process (sodium), 63.

Norton's experiments (cerium), 169.

209.

Reduction, Electro-thermic, of mag-
nesium, 31.

Norddeutschen Affinerie, 189.

RANDOLF process (copper refining),

0

Reinbold process (aluminium), 116.
Rickets process (nickel), 398.