Robert Boyle 1661 Sceptical Chymist

David P. Wheatland £fi$uih i^/*u^^ A^ L^r n^ 4 ^V/ ^^ "^^ frui/yrr^n4:^>utf Jc^^ n^^. J Sceptical Cliymift J Q R, CHYMICO-PHYSICAL Doubts & Paradoxes, Touching the EXPERIMENTS WHEREBY VULGAR SPAG IRIS TS Are wont to Endeavour to Evince their SALT, SULPHUR. MERCURY, T O B E The True Principles of Things. To which in this Edition are fubjoyn'd divers Experiment? and Notes about the Frodu^i'^ blenefs of ChymiCalTrincifUs. O X F O R P^^ Printed by HENRT HALL for Rk. Vai m^ and B. Took, at the Ship in St. Tauh Chjarch^Yard. i(^%^. 90w'i?'. BIT "" Imprimatur. H E N; CLERKE F'iet-Cam.OxM. A PREFACE introdvctorY To the fblloi^iri^ Tredtife. \p give the Reader ijfj accounU Wf>y^ the foUowing Treatife is fuff'erd to p/ifs ahroad fomaimd and imferfeii-^ Imufi inform him that 'tis now long ftnCe^ that to gratify ati ingenious Gentleman^ I fft down some of the Reafons that kef t me from fully dcfuiefcing f/- ther in the Perifatetical, or in the Chymical ' Pollrine^ of the Material Principles of mixt Bodies. This Difcourfe some years after falling into the hands of some learned mm^ had thi good luck to he fo favourably receivd^ and ad-, vantagioujly fpoken of by them^ that having had more than ordinary Invitations given me tol make itfublick.<, I thought fit to review it,^ that J might retrench some things that fe em* d riot fo fit to be ff)ewn to every Reader, And fuh…