. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. 588 MANUAL OF POISONOUS PLANTS. Fig, 325. Sandbox Tree (Hura crepitans). 1. Flowering and fruiting branch. 2. Part of a large branch. Latex causes dermatitis. (From Vesque's Traite de Botanique.) oil (Croton Tiglium) has not been definitely determined, but it has been refined to a dark brown oil known as crotonol. The plant contains tiglinic acid CgHjOj. Crotinic acid C^H^jOj and Croton oil are derived from the Croton Tigliwm, that i
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. 588 MANUAL OF POISONOUS PLANTS. Fig, 325. Sandbox Tree (Hura crepitans). 1. Flowering and fruiting branch. 2. Part of a large branch. Latex causes dermatitis. (From Vesque's Traite de Botanique.) oil (Croton Tiglium) has not been definitely determined, but it has been refined to a dark brown oil known as crotonol. The plant contains tiglinic acid CgHjOj. Crotinic acid C^H^jOj and Croton oil are derived from the Croton Tigliwm, that is cultivated in southern India. This plant is a drastic purgative, capable, when given in excessive doses, of causing death. The resin produces vesication. The seeds, according to Blj'th, are very poisonous. The fixed oil has the formula C^H^^Oj. The bark of Cascarilla {Croton Eluteria), native to the Bahamas, is used as a tonic and contains cascarillin C^HgO^. The milky juice of Euphorbia resinifera of Morocco is used as a purgative and is so intensely acrid that people in collecting it are compelled to tie a cloth over their nostrils and mouths. It contains the substance euphorbon C^jH^^O^, which has a burning taste. The milky juice of agallocha {Bxcoecaria Agallocha) of tropical Asia is very acrid and blisters the skin. It is said that if the juice drops into the eye as sometimes happens to the woodcutter, blindness may be caused. Bxcoecaria glandulosa contains excoecarin C^gH^^Og. The Homalanthus Leschenaultianvs is said to be poisonous. The fruit of Hyaena poison {Toxicodendron capense) of South Africa is very poisonous, and is used to destroy beasts of prey. Gum elastic or Para rubber is derived from the South American Hevea brasiliensts. Other plants of the family yield caoutchouc, which contains hydrocarbons that are readily soluble in chloroform. The alkaloid drumin occurs in. Euphorbia Drumtttondii. Several species of Euphorbia like Poinsettia {Euphorbia spkn- dens) a
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