A major compendium on the subject, in two parts. Part I (150 pages) has chapters on the various kinds of symptoms of poisoning, classification of poisons, symptoms and antidotes, and a catalog of the more important poisonous plants of the United States and Canada arranged in taxonomic order. Part II (over 700 pages) lists poisonous plants in taxonomic order with descriptions, illustrations, and account of poisonous properties. Also includes a catalog of the poisonous plants of the world in tabular form, with plants arrangd alphabetically by family; gives name authority, properties, and locality. A bibliography of 1,097 items is followed by a general index.