795. Properties of Copper, 610 796. Cupric Oxide, 610 797. Cupric Sulphide, 610 798. Solubility of Copper in Water and Various Fluids--Experiments of Carnelley, W. Thompson, and Lehmann, 610-612 799. Copper as a Normal Constituent of Animal, Vegetable, and other Matters--Dupré’s Experiments--Bergeron and L. L’Hôte’s Researches, 612-614 800. The “Coppering” of Vegetables--Copper in Green Peas-- Phyllocyanic Acid, 614, 615 801. Preparations of Copper used in Medicine and the Arts--(1) Medicinal Preparations--(2) Copper in the Arts, 615, 616 802. Dose--Medicinal Dose of Copper, 616, 617 803. Effects of Soluble Copper Salts on Animals, 617-619 804. Toxic Dose of Copper Salts, 619 805. Cases of Acute Poisoning, 619, 620 806. Effects of Subacetate, Subchloride, and Carbonate of Copper, 620 807. _Post-mortem_ Appearances seen in Acute Poisoning by Copper, 620, 621 808. Chronic Poisoning by Copper, 621, 622 809. Detection and Estimation of Copper--General Method--Special Method for Copper in Solution in Water and other Liquids-- Detection of Copper in Animal Matters, 622-624 810. Volumetric Processes for the Estimation of Copper, 624 3. _Bismuth._ 811. Bismuth as a Metal, 624 812. Teroxide of Bismuth, 624 813. The Sulphide of Bismuth, 624 814. Preparations of Bismuth used in Medicine and the Arts--(1) Pharmaceutical Preparations--(2) Bismuth in the Arts, 624, 625 815. Medicinal Doses of Bismuth, 625 816. Toxic Effects of Sub-nitrate of Bismuth, 625, 626 817. Extraction and Detection of Bismuth in Animal Matter, 626, 627 818. Estimation of Bismuth--Volumetric Processes, 627, 628 4. _Silver._