An inaugural dissertation on the kalmia latifolia and angustifolia : submitted to the examination of the Reverend John Ewing, S.S.T.P. Provost, the trustees & medical faculty of the University of Pennsylvania, on the 27th day of May, 1802, for the degree of doctor of medicine / by George G. Thomas.

  • Thomas, George G.
Date:
1802
Catalogue details

Licence: Public Domain Mark

Credit: An inaugural dissertation on the kalmia latifolia and angustifolia : submitted to the examination of the Reverend John Ewing, S.S.T.P. Provost, the trustees & medical faculty of the University of Pennsylvania, on the 27th day of May, 1802, for the degree of doctor of medicine / by George G. Thomas. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    EXPERIMENT III. Half a drachm of the powdered leaves of the Kalmia latifolia, was subjected to the action of repeated quantities of alkohol. The alkohol that was first added assumed a dark green colour: this was decanted, and other quantities added, until they ceased to be coloured. After evaporating the clear and coloured liquid, it was found to con- tain sixteen grains of resin. EXPERIMENT IV. The part that remained indissoluble by the al- kohol, was triturated with small and repeated quantities of water, as long as they appeared to extract any thing from it. Upon filtering and evaporating the coloured water, six grains of a gummy substance were obtained. The part that remained indissoluble by the alkohol and water, was insipid and of a grey earthy appearance. When dried it was found to weigh eight grains. EXPERIMENT V. One ounce of bark of the K. latifolia was put into about four ounces of water, and suffered to stand exposed to a moderate heat, forty-eight