* * * * * COMMENTARY. Without entering into the discussion regarding this plant, we shall merely observe that we are disposed to agree with those who refer it to a species of spurge, namely, _Euphorbia spinosa_. Dioscorides describes it as being cholagogue, hydragogue, and phlegmagogue. (iii, 159.) It does not appear that it is treated of by Galen, nor by the Arabian authorities. Ἰρίς. Iris, _Fleur-de-lys_, is calefacient, consists of very subtile particles, and is detergent and digestive. It therefore agrees with coughs, renders expectoration easy, cures tormina, and cleanses foul ulcers. When drunk with honeyed water it evacuates the bowels. * * * * * COMMENTARY. Probably it comprehends the _Iris Germanica_ and _I. Florentina_. It is the first article treated of by Dioscorides, who gives a full account of it, and concludes by saying that the different species of it are useful for many purposes. He recommends them as an external application in cutaneous diseases and ulcers, and as being soporific and alexipharmic; when drunk with wine as proving emmenagogue, and also applied in pessaries, malagmata, and acopa. The others treat of its virtues less copiously, with the exception of Serapion and Avicenna. One of Serapion’s Arabian authorities, Aben Mesuai, says it purges yellow bile and black bile, and is deobstruent in obstructions of the liver. He also mentions it as a sternutatory and masticatory. (De Simpl. 189.) Avicenna’s characters of the Iris are in the main derived from Dioscorides, but altogether his description of it is very interesting. He recommends it very particularly in diseases of the rectum and uterus, both when administered internally and in a hip-bath. He also represents it as proving useful in gonorrhœa, and in the pollutio nocturni somni. He concludes by calling it a general alexipharmic (ii, 2, 349.) The root of the Florentine Iris or Flower de Luce, was used in the practice of medicine down to a late date. See Quincy and Boerhaave. It is still kept in the shops, and has the character of being a drastic hydragogue. Gray, Suppl. to Pharmacop. (251.) It retains a place in the Modern Greek Pharmacopœia. Ἰσάτις. Isatis, _Woad_; the garden species which dyers use, is of a desiccative nature, having also some astringency. By means of these powers it agglutinates even the large wounds of hard bodies, is of use in hemorrhages, discusses œdematous swellings, and opposes the progress of all malignant diseases. The wild is more pungent, and on that account being more desiccant, it the more strongly resists all humid gangrene, but for all other purposes it is worse as being pungent. Owing to its strong powers, it is useful in affections of the spleen. * * * * *