The leaves of Hamamelis virginica, collected in autumn.

Characters. - Short-petiolate, about four inches (10 centimetres) long, obovate or oval, slightly heart-shaped and oblique at the base, sinuate-toothed, nearly smooth; inodorous; taste astringent and bitter.

Composition. - It contains tannic acid and a bitter principle.

Officinal Preparation.

dose.

Extractum Hamamelidis Fluidum.....................................

15 min.-2 fl. dr.

Uses. - It is used as an external application to piles, bruises, and inflammatory swellings. Hazeline, or the fluid extract of hamamelis, arrests the bleeding from piles in some cases almost like magic. Just before a motion a pledget of cotton about the size of a hazel nut, and soaked in the liquid, should be inserted into the rectum, and after the motion, when the anus has been cleansed by washing, a similar pledget should be again introduced and allowed to remain. Internally it is a very efficient haemostatic in bleeding from the lungs and other internal organs. In some cases of haemoptysis I have found it in the form of the non-officinal preparation of it called hazeline more efficient than digitalis and ergot, although in other cases digitalis and ergot have succeeded better. It checks the flow in menor-rhagia when given during the period, and it lessens pain in dysmenorrhoea. In one case a patient informed me that it invariably caused seminal emissions, which ceased when it was discontinued. In this action it resembles strychnine (p. 450). It has been supposed by Dujardin-Beaumetz to owe its utility to an action on the muscular fibre of veins.