Lacmoid, 121

Law of chance, equation, 52
Lead

electrolytic determination of, 403,
404

and copper determinations in brass,
methods of, 402

and copper determination in brass
[method A], 403-405
and copper determination in brass
[method B], 406

base alloys, composition of, 390,
409

determination in brass, 403-406
determination in solder, 413
determination as lead peroxide, 403-
404

determination as lead sulphate, 406
from tin, separation of, 411

in copper determination, removal
of, 344

Legal aspects, 7, 8

Length, units of, 430

Liquid junction potential, 238
Limestones,

calcium and magnesium determina-
tion in, 206

carbon dioxide determination in,

350-355

composition of, 206, 371

Liquid capacity, units of, 428

Literature, 6, 13

Liter, definition of, 90

Lithium from sodium and potassium,
separation of, 234

Logarithms

of numbers, 416
use of, 7, 10

Loss in weight of container due to
ignition, 81

"Loss on ignition," in carbonate rock
analysis, 206

M

Macerated filter paper, 45

Magnesia determination in lime-
stone, 206

"Magnesia mixture," preparation of,

189

Magnesium ammonium phosphate
ignition of, 190, 192

in determination of phosphorus,
187, 189-191

re-precipitation of, 189

theory pertaining to, 190, 191
Magnesium

carbonate in carbonate rocks, 206
determination in carbonate rocks,
206

determination in dolomitic lime-
stone, 206

determination in rock analysis, 379
determination of, 203, 204, 206
pyrophosphate, conversion to, 190,
191

Manganese alloys, composition of
copper-, 390

Manganese

dioxide in permanganate solution,
263

from other constituents, methods
of separation of, 291–295
gravimetric determination of, 290,
297

oxidimetric determinations of, 285-
289

separation prior to determination,
methods for, 292-295

steels, composition of silico-, 389
Manganese determination
in iron and steel, 287, 289
in manganese ores, 296
in spiegel, 297

in tungsten steel, 395
Ford-Williams' method, 289
Gibbs' method, 290, 297

Litmus, 121

persulphate method, 288

Manganese determination - Cont.
sodium bismuthate method, 287
Volhard's method, 286, 296

Mass

standard of, 60

tables of units of, 427
Mauveine, 121

Measure, units of liquid and dry, 428,
429

Measures and weights, tables of, 427–
433

Measurement of volumes, factors
which affect, 93

Measurements, volumetric, 36, 89
Meker burner, 15

Meniscus, observation of, 95
Mercury cathodes, use of, 330
Methods grouped as to principle, 4
Methyl

Orange, 105, 121, 130
Red, 121, 128

Violet 6B, 121

Metric units

of area, 431

of dry measure, 429

of length, 430

of liquid measure, 428

of mass, 427

of volume, 431

determination of, 226, 227
determination in a nickel ore, 227
Nickel-chromium steels, composition
of, 389

Nitric acid, determination of, 229
Nitrogen in water, solubility of, 423
Nitron, 229

Nitro phenol p, 121
Nitroso-6-naphthol, 230

to separate groups of elements, use
of, 230

Nitrosophenyl hydroxylamine, am-
monium salt of, 228

Non-corrosive alloys, composition of,

390
Non-ferrous alloys,

analysis of ferrous and, 387-414
composition of, 390

Normal solution

definition of, 124

in terms of change of charge, 259
Notebook, description of laboratory, 7

Observation

factors, 52-57

rejection of an, 57

Observations, number of, 56

Occlusion relative to precipitation,

151-153
Ohm's law, 312

Operations, general, 33-49
Organic precipitants, 225-234
Outfit, laboratory, 30, 31
Overvoltage, 315

for copper and iron, cathodic, 316
for hydrogen and oxygen, 317-320
effect of surface condition of elec-

trode on, 315, 317, 318, 331
variable factors of, 315, 331
Oxalate ion, potential of, 249
Oxidation

at the anode, 327

by electrolysis, 310 et seq.
definition of, 236, 237
Oxidation-reduction

general theory of, 235-255
potentials, table of, 257

reaction, reversibility of an, 243
reactions, calculations involved in,
258-261

reactions, equilibrium of, 242
Oxides" in rock analysis, determina-
tion of "combined, 375

Oxidimetric determination of iron,

270 et seq.

Oxidimetry, calculations involved in,
258-261

Oxygen

anodic overvoltage for, 319, 320
in water, solubility of, 423

Pendulum

compound, 62

P

oscillation amplitude of balance, 65
Perchlorate method for potassium de-
termination, 385

Periodicals and journals, 13
Permanganate

ion, advantages of the, 263
ion, detailed discussion of the po-
tential of, 247, 250-255
solutions, methods of standardiz-
ing, 264-269

standard solution, preparation of a,
263

titration, end point in a, 252
Persulphate method for determina-
tion of manganese, 288

Pewters, composition of, 390
Phenolphthalein, 105, 120, 121
Phenol Red, 121

Phosphides, oxidation of, 187, 193
Phospho-molybdate in determination
of phosphorus, ammonium, 187,
188

and sodium determination in rock
analysis, 380, 381

determination in rock analysis, 382-
385

ferrocyanide solution, standardiza-
tion, 218

from lithium, separation of, 234
Potential

deposition, 323, 329, 330
equilibrium, 239

with progress of oxidation-reduc-
tion reaction, change of, 241, 245
Potentials

table of equilibrium, 257

table of oxidation-reduction, 257
Precipitation, 41, 146, 147
dragging down effect of, 151-155
fractional, 149, 150, 175
impossible, complete, 147
time factor in, 146

with hydrogen sulphide, 17, 159,

211 '

Precision

Soluble salt, definition of a diffi-
cultly-, 141

Solution
molar, 25, 123
normal, 124

of sample, effecting, 37, 38
temperature influences on volume
of, 92

tension constants, table of, 256
valuation of a, 126

Solutions

caution in use of standard, 131, 132
expressions of concentration of
standard, 25, 123, 124, 126, 127
methods of making standard, 130,
132, 133, 135

standardized to specific factor val-
ues, 125-127

table of some saturated, 424
Specifications of standard volumetric
apparatus, 97
Specific gravity table
of acetic acid, 417
of aqua ammonia, 422
of hydrochloric acid, 418
of nitric acid, 419
of phosphoric acid, 420
of sulphuric acid, 421
Speed in analytical work, 33
Sphalerite, zinc determination in, 220
Spiegel, determination of manganese
in, 297
Standard