Agricola, 615

Air the standard for determining the specific
gravity of gaseous bodies, 530

Aluminium, sources of; processes for obtain-
ing: properties of; oxide of; salts of; use
in commerce, 623, 624, 625
Ammomo-magnesic phosphate, 628
Ammonia, sources of: properties of, 566, 567
Ammonium, properties of; uncertainty as to
its being a metal, 621
Amorphous boron, 587, 588

Amorphous phosphorus, 604, 605, 606

Antimony, sources of; physical and chemical
properties of: oxides of: uses in commerce,
613, 614

Antimoniuretted hydrogen, 614
Antique cameos, 593

Apparatus for compressing in the manufac-
ture of gun cotton, 561

Apparatus for exhibiting cohesion figures, 534
Apparatus for making and washing oxygen

CHEMISTRY-continued.

Balard, 575

B.

Barium, properties of; oxides of: salts of, 623
Beakers in which to prepare solutions, 554
Bell, Jacob, 600

Bell's process for obtaining aluminium, 625
Berg crystal, 591

Berzelius, 594. 595, 643

Bessemer's process of steel manufacture, 634.
Bichloride of platinum, 651

Binary compounds, 540

"Binoxide," 540; do. of oxygen, 549.

Bismuth, sources of: physical and chemical
properties of; oxides of; uses of; analogy to
nitrogen, phosphorus, &c., 614-616
Bismuth glance, 615

"Bittern," the, 570, 575

Black, Dr., 582

Blowpipes used by chemists, &c., 611

Boiling-point of water, the, 554

Bone-black or animal charcoal, 579

Boron: boracic acid, 587, 588, 589
Boussingault, 551

Boyle, 600, 602

and potash, 539

Orpiment, 609

Osmium, 651

Osmometer, the; osmose," 534
Ovens for drying precipitates, 615
Oxidation, 548

Oxides-of aluminium, 625; antimony, 614:
arsenic, 609; barium, 623; bismuth, 615;
boron, 588, bromine, 576; cadmium, 631;
cæsium, 621; calcium, 622; carbon, 582;
chromium, 639: cobalt, 638: copper, 648;
iodine, 575; indium, 640; iron, 637: lead,
642, lithium, 621; magnesium, 628; man-
ganese, 638; mercury, 650; nickel, 639;
platinum, 651; phosphorus, 606; potassium,
618; rubidium, 620; silicon, 590: silver,
645: sodium, 620; strontium, 622; sulphur,
597; tellurium, 608; tin, 640; tungsten,
641 uranium, 640; zinc, 630
Oxyacids of sulphur, the, 597
Oxygen, properties of; tests for, 544-549
Ozone, properties of; production of, 549

Palladium, 651

P.

Papin's digester, 554
Paracelsus, 629

Pattinson's process for obtaining silver from
lead, 644

Platinum, sources, properties, oxides of, 650
Platinum chloride, 651

Plumbago, black lead, or graphite, 579
Plumbum, 642

Pneumatic trough, the, 546

Polybasic acids, 541

Portable sand bath and oven, 610
Positive osmose, 535.

Potassic silica fluoride, 590

Potassium hydrate, 618

Potassium, sources, physical and chemical
properties, oxides, salts, and compounds of,
617-619

Precipitating glass, for argentic chloride, 645
Prefixes and terminations in chemical nomen-
clature, 539, 540

Prentice & Co., Messrs., 557, 560, 562, 563
Preparation of sulphuretted hydrogen, 599
Pressure cavities in the topaz, beryl, and dia-
mond, 581

Priestley. Dr., 544

Prince Consort's speech on Science, the, 528,