The most interesting point is the condition of the urine. In cases of poisoning it is dark or reddish-brown in colour, due to the presence of _haematoporphyrin_. It contains albumin and casts, but no red corpuscles. In cases of haematoporphyrinuria the prognosis is bad, and it is said that these cases invariably end fatally. _Treatment._--In an ordinary case emetics, strong coffee, hypodermic injections of strychnine, saline injections, and transfusion. Cases of chronic poisoning from the 'als' are not uncommon, and are increasing in frequency. Hypnogen is apparently identical with veronal. All the above-named aniline derivatives are included in Part I. of the scheduled poisons. XXXIX.--CONIUM AND CALABAR BEAN =Conium Maculatum= (Spotted Hemlock).--All parts of the plant are poisonous, often mistaken for parsley. Contains the poisonous principle _coniine_, a volatile liquid alkaloid with a mousy smell; insoluble in water; soluble in alcohol, ether, and chloroform. It also contains methyl coniine. _Symptoms._--Dryness of throat, headache, dilated pupil, dysphagia, loss of muscular power, passing into complete paralysis. Delirium, coma, and convulsions, occasionally. _Post-Mortem Appearances._--Congested brain and lungs; redness of the mucous membrane of the stomach. The stomach and intestines should be examined for fragments of the leaves and fruit, recognized by their microscopical appearances. _Treatment._--Emetics, tannic acid or gallic acid. Diffusible stimulants. _Method of Extraction from the Stomach._--Use Stas-Otto process. _Tests._--The mousy odour. Deepened colour and dense white fumes with nitric acid. Pale red, deepening, with hydrochloric acid. There are several other umbelliferous plants which are poisonous. The water hemlock (_Cicuta virosa_) produces symptoms not unlike those of hemlock; it has been mistaken for parsnip and celery. It contains an active principle, _cicutoxin_, which in some respects is allied to strychnine and picrotoxin. The fool's parsley, or lesser hemlock (_AEthusa cynapium_), is another member of this group, although doubt has been expressed as to whether it is really poisonous. The water dropwort (_Oenanthe crocata_) is undoubtedly poisonous, especially to cattle. In man it produces abdominal pain with diarrhoea and vomiting; dilated pupils, slow pulse, and cyanosis; delirium, insensibility, and convulsions. The post-mortem appearances are not characteristic, but the stomach and intestines should be examined for portions of the plant. =Calabar Bean or Physostigma.=--The bean of _Physostigma venenosum_ contains the alkaloid physostigmine or eserine, with the antagonistic alkaloid calabarine. _Symptoms._--Vomiting, giddiness, irregular cardiac action, contraction of the pupils, paralysis of lower extremities, and death from asphyxia. _Treatment._--Emetics; hypodermic injection of 1/50 grain sulphate of atropine, repeated if necessary.