A choice collection of rare secrets and experiments in philosophy. As also rare and unheard-of medicines, menstruums, and alkahests; with the true secret of volatilizing the fixt salt of tartar / Collected and experimented by the honourable and truly learned Sir Kenelm Digby ... Hitherto kept secret since his decease, but now published for the good and benefit of the publick, by George Hartman.

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A choice collection of rare secrets and experiments in philosophy. As also rare and unheard-of medicines, menstruums, and alkahests; with the true secret of volatilizing the fixt salt of tartar / Collected and experimented by the honourable and truly learned Sir Kenelm Digby ... Hitherto kept secret since his decease, but now published for the good and benefit of the publick, by George Hartman. Public Domain Mark. Source: Wellcome Collection.