Schulze is much inclined to believe that the πήγανον ἄγριον here treated of is the _peganum harmala_ of Linnæus, a plant intermediate between the ruta and melanthium. He is also disposed to think that the melanthium of the ancients was the _nigella sativa_, L. We are inclined to adopt this opinion from the text of Avicenna. (iv, 6, 1, 16.) Sprengel agrees with Anguillara and Dalechampius in opinion that the cactos was the _cynara cardunculus_, L., or cardoon artichoke, a variety of the C. scolymus. (Comment. in Dioscor.) Schweighaeuser inclines to the opinion of Villebrun, the French translator of Athenæus, who makes it to be the C. sylvestris latifolia, which he says grows commonly in Sicily at the present day. (In Deipnos. ii, 83.) Under this head we may notice the treatment of poisoning by gum euphorbium, and the spurges, of which no mention is made by the Greek authorities on toxicology. For the Arabians, see Avicenna (iv, 6, 1, 4, 5); Rhases (Contin. xx, 2; ad Mansor. viii, 48); Alsaharavius (Pract. xxx, 1, 19.) The symptoms as given by them all are, violent pain and heat in the primæ viæ, with bloody discharges, and death, unless timely relief be given. Their remedies are immediate vomiting with hot water and oil, then administering demulcents, barley-water, and in the end, the theriac. Galen and Haly Abbas, in their treatises on the Theriac, recommend it in this case of poisoning. The mezereon is not noticed by the Greeks or Romans either as a poison nor as a medicinal substance. The Arabians treat of it under both these heads. See Avicenna (iv, 6, 1); Rhases (ad Mansor. viii, 53.) The symptoms as given by them are violent vomiting and purging, for which they recommend sweet milk, butter, juleps, in the first place, and in extreme cases the theriac and sealed earth. The Arabian authorities confound their mezereon with the chamæleon of the Greeks, treated of in the thirty-seventh section of this book. The _dende_ of Avicenna and Serapion was the strychnos colubrinus, according to Sprengel. (R. H. H. i, 250.) Rhases classes the nux vomica along with the articles treated of in this section. He recommends us in all these cases to give warm water to promote the vomiting, and render it easier, and if violent convulsions come on, he directs the patient to be put into a warm bath, and anointed with hot oils. (Ad Mansor. viii, 49.) Serapion treats of it in his Materia Medica (163.) The Arabians also treat of the methel-nut.