=Poisonous Parts=: Poisonous principles are alkaloids which are in largest amounts in the roots. Leaves and seeds contain smaller quantities and can be harmful. Poisoning is characterized by salivation, abdominal pain, and attempts to vomit. Large quantities produce a cold and clammy skin and depressed circulation due to effects of =veratrum= alkaloids on the heart muscles and on respiration. Death may result. =Antidote=: Call your doctor. Have patient vomit if the victim has not become unconscious and appears calm. If shock has developed, use standard first aid measures. Physicians treat for =veratrum= alkaloid poisoning. INDIAN HEMP [Illustration: Indian hemp, cannabis, marihuana, marijuana _Cannabis sativa--MORACEAE_] =Description=: This tall annual weed is usually eradicated by local authorities as soon as it is found because of its narcotic properties. Occasionally, however, it turns up on dumps, along railroad tracks, or other places. Fruits or “seeds” of the _Cannabis_ for commercial purposes, have been pre-treated to render them non-viable and of use in bird seed mixtures. At times, some are not rendered sufficiently sterile and these, in the home refuse, get to dump areas where they germinate. Plants can reach more than 6 feet in height. Leaves are slender and divided into five to seven long, narrow, pointed leaflets each with a saw-tooth margin. They are rough to the touch, giving one the feeling of sand paper. Smaller flower bracts are quite resinous and sticky. Flowers and fruits are rather inconspicuous and scattered along upper portions of the stem. Male and female flowers are borne on separate plants. =Poisonous Parts=: The leaves, flowering parts, and resinous secretions contain the _Cannabis_ (=cannabinol=) narcotic principles. Publicity over the illegal use of marihuana in its various forms, i.e., cigarettes, extracts, pills, etc., make it a curiosity among some people. It causes cerebral stimulation and excessive amounts produce hallucinations, delirium, and eventually mental depression. It is a plant which can cause drug addiction. =Antidote=: Call your doctor. Have patient vomit. Physicians treat for cerebral depression and other aspects of marihuana poisoning. JIMSON WEED [Illustration: Jimson weed, thornapple. Jamestown weed _Datura stramonium and Datura tatula--SOLANACEAE_] =Description=: An annual herb, 3 to 4 feet in height, branching stems with trumpet-shaped white flowers or thorny fruits formed in forks of the branches. Leaves pointed and with irregular margins. _Datura tatula_ has purple stems. Both have spiny or prickly fruits which turn brown when ripe and spill out several small brownish-black, kidney-shaped seeds. These are also poisonous.