Active Ingredients. - Little known. Boullay failed to find Violine in this plant (Gubler).

Physiological Action. - A strong infusion made from 3 ss. -

3 i. of the herb without the root, does not give rise to any suspicion that it contains violine or emetine. Its action is exceedingly mild, sometimes proving slightly laxative, at other times diuretic; as a rule giving rise to very little disturbance.

Therapeutic Action. - Viola tricolor has long been a favorite in France in the treatment of eczema capitis et faciei, and the editor has employed it for many years with great satisfaction in chronic cases of this affection. The watery preparations have appeared to answer better than the alcoholic, and our usual procedure is to give it in infusion, combined with purgative doses of senna for the first few days. Afterward the violet is continued alone. To make the compound infusion, take one ounce of the herb and half an ounce of senna leaves. Pour on them a pint of boiling water, and when cold strain. Of this a tumblerful (for an adult) is taken at night. The dose should be regulated so as to produce three or four evacuations daily for a week or so; after that the senna is omitted and the viola continued in somewhat smaller quantity. For children, Cazin macerates 3 i. - ij- in half a pint of cold water for twelve hours, then boils the infusion and adds a little milk and sugar. This amount to be taken daily. Viola tricolor is not found wild in this country, and the cultivated plant is not to be relied on. The imported herb should be employed, and care taken to procure a good quality. Most of it in the market is inferior.)