_Symptoms._—Dryness of the mouth and throat, thirst which nothing allays, nausea and vomiting, great dilatation of the pupils with indistinct or double vision, giddiness, palpitation of the heart, physical and mental depression, perversion of the sense of taste, and delirium followed by stupor, form the chief symptoms. They may set in within from half an hour to three or four hours of swallowing the poison. Sometimes strangury and bloody urine, a scarlatinal kind of rash upon the skin, a disposition to laugh and talk wildly, fanciful delusions, a rapid flow of ideas, and difficulty in walking, have been observed. A large detachment of French soldiers, halting near Dresden, ate freely of the belladonna berries. Shortly afterwards they were seized with nausea, thirst, dryness of the throat, difficult deglutition, insensibility of the eye, great dilatation of the pupil, delirium, and coma. Many of the men died before assistance could be rendered to them. _Post-mortem Appearances._—Congestion of the cerebral vessels, dilated pupils, red patches at different parts of the alimentary canal, and a dyed purple hue of the gastric mucous membrane, if the berries have been eaten, are the most common appearances. _Treatment._—Stimulant emetics, castor oil, and animal charcoal are the remedies to trust to. Dr. Taylor refers to one case in which a young man poisoned himself with two grains of _atropia_. He took the dose on going to bed, was heard to snore heavily during the night, and was found dead at seven o’clock in the morning. As a means of diagnosing poisoning by belladonna it has been recommended to introduce a few drops of urine into the eye of an animal, to see if dilatation of the pupil takes place. _Test._—There is no very certain test for _Atropia_ beyond its effect on the pupils and on vision. STRAMONIUM (_Datura Stramonium_, _Thorn-Apple_) is an indigenous plant found in waste places. The fruit and seeds are the most poisonous parts of the plant. The active alkaloid, named Daturia, has properties resembling those of atropia, with which it would seem to be almost identical. The poisonous effects of stramonium are the same as those of belladonna, and are to be relieved by similar remedies. When this drug is prescribed as a medicine it should be immediately discontinued if it produce dryness of the throat and dilatation of the pupils.