604.1 Sir Kenelm DIGBY. 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. 8° London: Printed for the publisher 1682 Ferguson Nat Union Cat [Illustrations:- 1. Inserted after p72. Engraving 129x70mm. Vessel with fractionating column made up of a number of parts, and with a still head passing over to a receiving flask on a pedestal. 2. Inserted after p112. Engraving. 132x73mm. The philosophical athanor, showing its component parts. 3. Inserted after p140. Engraving. 71x132mm. A furnace driven by bellows. A cucurbite and crucible are shown. 4. Inserted after p234. Engraving. 64x72mm. A cucurbite is heated on a furnace, and tubes pass to the right and left to two receiving flasks supported on stands.]