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, Kt. Chancellour to Her Majesty the Queen-Mother. Hitherto kept secret since his decease, but now published for the good and benefit of the publick, by George Hartman | Collections | The Huntington