Agricola, 615 Air the standard for determining the specific Aluminium, sources of; processes for obtain- Amorphous phosphorus, 604, 605, 606 Antimony, sources of; physical and chemical Antimoniuretted hydrogen, 614 Apparatus for compressing in the manufac- Apparatus for exhibiting cohesion figures, 534 CHEMISTRY-continued. Balard, 575 B. Barium, properties of; oxides of: salts of, 623 Bell's process for obtaining aluminium, 625 Berzelius, 594. 595, 643 Bessemer's process of steel manufacture, 634. Binary compounds, 540 "Binoxide," 540; do. of oxygen, 549. Bismuth, sources of: physical and chemical "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 Boyle, 600, 602 and potash, 539 Orpiment, 609 Osmium, 651 Osmometer, the; osmose," 534 Oxides-of aluminium, 625; antimony, 614: Palladium, 651 P. Papin's digester, 554 Pattinson's process for obtaining silver from Platinum, sources, properties, oxides of, 650 Plumbago, black lead, or graphite, 579 Pneumatic trough, the, 546 Polybasic acids, 541 Portable sand bath and oven, 610 Potassic silica fluoride, 590 Potassium hydrate, 618 Potassium, sources, physical and chemical Precipitating glass, for argentic chloride, 645 Prentice & Co., Messrs., 557, 560, 562, 563 Priestley. Dr., 544 Prince Consort's speech on Science, the, 528, |