-

CIDS and bases distinguished,
35, 39

bases and salts exemplified, 40
compounds of nitrogen and car-
bon with oxygen, 171
meaning of the term, 33
oxides, instances of, 37
salt explained, 35

Aërated water, 124

Air, a mixture, not a compound,
141, 146, 147

analysis of, 144

breathed by animals, 148
centesimal composition of, ch.
V., 142

composition of, by volume and
by weight, 155

composition of, how affected by
red-hot charcoal, 150

- constitution of, proved by Lavoi-
sier, 156

necessary for combustion, 158
problems on, 145, 165, 166, 167,
168

Alkaline, alkaline earths and earths
distinguished, and list of, 42
-oxides, distinguished from acids
and bases, 35

Allotropic modifications of carbon,
204

of phosphorus, 382, 384, 385
of silicon, 367

percentage composition of, 194
preparation of, 197, 201

presence in air of, 160

- properties of, 199

-solubility of, 199
sources of, 196
tests of, 203

various names for, chap. viii.
why a triad, 194

Ammonic nitrite, when heated, 140
Anæsthetic, why and when used, 173
Analysis, meaning of, 4

Animals, change in the air caused
by, 234

Animal charcoal, bleaching pro-
perties of, 204
Anthracite, 264

Antiseptics, meaning of, 224
Aqua regia, 300

Argentic nitrate, formula of, 48
Atomic theory, statement of, 16
- weight, meaning of, 23

-

BAC

BACTERIA, cause of putrefaction,

Barff, Professor, discoverer of a new
antiseptic, 224 (note)
Baric nitrate, formula of, 48
Bases, meaning of, 34
Basic oxides, instances of, 34
Bituminous coal, 264

Bittern, meaning of, 318 (note)
Bleaching powder, 282
Blende, formula of, 334
Blood, venous, 234

Bone ash, composition of, 379
Breathing, loss of weight by, 245
Bromine and nitric tetroxide dis-
tinguished, 321

in what it resembles chlorine,
320

- preparation of, 318
properties of, 319

sources of, 317

Bunsen burner, construction of, 261

composition of, 217
preparation of, 212–215
problems on, 218, 219
properties of, 217

Caustic potash. See Potassic hydrate,

202

formula of, 47

soda.

See Sodic hydrate, 202
Chalybeate waters, 124

Charcoal, action of moist air on a
charcoal fire, 266

oxygen and sulphur upon red-
hot, 210

various forms of, 204
Chemical affinity, definition of, 11
combination and mixture, dif-
ference between, 13

elements, why so called, 6

equivalent, meaning of, 27

scarcely ever used, 28 (note)
nomenclature, exercises on, 29,
30, 45-54

Chemistry, definition of, 1

natural philosophy, difference
between, 2

Chlorides, tests of, 316, 354
Chlorine, action of, upon potassic
iodide, 283

284

upon potassic oxide, 282
upon sulphuretted hydrogen,

upon various substances, 285
and bromine, discriminated, 289
and hydrogen, discriminated, 14,
290

-

-

chemical changes during, 251

- effects of, on various bodies, 249

and in an excessive quantity of
oxygen, 152, 235

- products of, 252

- why not possible in a closed

bottle, 253

Common salt.

See Sodic chloride,

formula of, 47, 49

Compounds, construction of names

of, 44

Copperas. See Ferrous sulphate,
formula of, 49

bonic dioxide, 224

Fire-damp, precautions against, 399
Flame, effects of chimney glass on,
258,259