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An essay upon the virtues of Balm of Gilead. : With a copper-plate of the balsam-tree, guarded by a Janissary. As it now grows in the Garden of Mecha, subject to the Prince of Arabia Felix in Asia. The second edition. To which is added, an account of the essence of that noble medicine, and proper directions for taking it ; together with those Rules and the Diet necessary to be observed during the Course. Public Domain Mark. Source: Wellcome Collection.