686. The Welbeck--The Oldham--The Bishop Stortford--The Wolverhampton--The Carlisle, and other Mass Poisonings by changed Food--Statistics of Deaths from Unwholesome Food, 506-508 687. German Sausage Poisoning, 509 PART VIII.--THE OXALIC ACID GROUP OF POISONS. 688. Distribution of Oxalic Acid in the Animal and Vegetable Kingdoms, 510 689. Properties and Reactions of Oxalic Acid, 510, 511 690. Oxalate of Lime; its Properties, 511, 512 691. Use of Oxalic Acid in the Arts, 512 692. Properties of Hydropotassic Oxalate (Binoxalate of Potash), 512 693. Statistics of Oxalic Acid Poisoning, 512 694. Fatal Dose of Oxalic Acid, 513 695. Effects of Oxalic Acid and Oxalates on Animals, 513 696. Researches of Kobert and Küssner on the Effects of Sodic Oxalate, 513, 514 697. Effects of Vaporised Oxalic Acid, 514, 515 698. Effects of Oxalic Acid and Hydropotassic Oxalate on Man-- Illustrative Cases, 515, 516 699. Physiological Action, 516, 517 700. Pathological Changes produced by Oxalic Acid and the Oxalates, 517, 518 701. Preparations in Museums Illustrative of the Effects of Oxalic Acid, 518 702. Pathological Changes produced by the Acid Oxalate of Potash, 518, 519 703. Separation of Oxalic Acid from Organic Substances, the Tissues of the Body, &c., 519-521 704. Oxalate of Lime in the Urine, 521 705. Estimation of Oxalic Acid, 521, 522 _Certain Oxalic Bases--Oxalmethyline--Oxalpropyline._ 706. The Experiments of Schulz and Mayer on Oxalmethyline, Chloroxalmethyline, and Oxalpropyline, 522, 523 PART IX.--INORGANIC POISONS. I. PRECIPITATED FROM A HYDROCHLORIC ACID SOLUTION BY HYDRIC SULPHIDE-- PRECIPITATE YELLOW OR ORANGE. ARSENIC--ANTIMONY--CADMIUM. 1. _Arsenic._