Substances, irritant, in large doses,—Pepper, Epsom Salt, Alum, Cream of Tartar, Sulphate of Potass, Common Salt, &c. 506 CHAP. XXVI. CLASS II. Of Narcotic Poisons, 510—of Narcotic Poisoning generally, and the distinction between it and natural disease, 511 510 CHAP. XXVII. Opium 530 SECTION 1. Chemical History and Tests 530 SECTION 2. Action and Symptoms 539 Action of Morphia and Narcotine 557 SECTION 3. Morbid Appearances 562 SECTION 4. Treatment 566 CHAP. XXVIII. Hyoscyamus, Lactuca, and Solanum 571 CHAP. XXIX. Hydrocyanic Acid 577 SECTION 1. Tests 578 SECTION 2. Action and Symptoms 582 SECTION 3. Morbid Appearances 593 SECTION 4. Treatment 596 Of the Vegetable Substances which contain Hydrocyanic Acid, 600—Bitter Almond, 601—Cherry-laurel, 605—Peach, 608—Cluster-cherry, 608—Mountain-ash, 608 CHAP. XXX. Carbazotic Acid 610 CHAP. XXXI. Poisonous Gases 611 What Gases are Poisonous 612 Effects on Man of Nitric Oxide Gas, 615—Chlorine, 616—Ammonia, 617—Hydrochloric Acid, 617—Hydrosulphuric Acid, 617—Carburetted hydrogen, 622—Carbonic Acid, 624—Carbonic Oxide, 634—Nitrous Oxide, 635—Cyanogen, 636—Oxygen, 636 CHAP. XXXII. CLASS III. Narcotico-Acrid Poisons 637 CHAP. XXXIII. Nightshade, 639—Thorn-Apple, 644—Tobacco, 647 639 CHAP. XXXIV. Hemlock, 653—Water-hemlock, 657—Hemlock Dropwort, 658—Fool’s Parsley, 661 653 CHAP. XXXV. Monkshood, 662—Black Hellebore, 670 662 CHAP. XXXVI. Squill, 671—White Hellebore and Cevadilla, 672—Meadow-Saffron, 674—Foxglove, 678—Rue, 681—Ipecacuan, 682 671 CHAP. XXXVII. Strychnia, 683—Nux Vomica, 686—St. Ignatius’ Bean, 691—False Angustura, 692 682 CHAP. XXXVIII. Camphor, 694—Cocculus Indicus, 696—Upas Antiar, 698—Coriaria myrtifolia, 698—Yew, 699 694