An Essay attempting a more certain and satisfactory discovery both of the true causes of all diseases, proceeding from vicious bloods, and the genuine operations of all remedies used internally in their cures. To which by way of introduction are premised some free thoughts, why the practice of physick is hitherto arriv'd at no greater a degree of certainty / By Barth. Beale.

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An Essay attempting a more certain and satisfactory discovery both of the true causes of all diseases, proceeding from vicious bloods, and the genuine operations of all remedies used internally in their cures. To which by way of introduction are premised some free thoughts, why the practice of physick is hitherto arriv'd at no greater a degree of certainty / By Barth. Beale. Public Domain Mark. Source: Wellcome Collection.