The Sceptical Chymist: Or Chymico-Physical Doubts & Paradoxes, Touching the Spagyrist's Principles Commonly Call'd Hypostatical; as They Are Wont to Be Propos'd and Defended by the Generality of Alchymists. Whereunto is Præmis'd Part of Another Discourse Relating to the Same Subject.

A scientific treatise written in the 17th century. This work engages with the foundations of chemistry, specifically critiquing the widely accepted principles held by both Alchemists and Peripatetic philosophers regarding the basic components of matter. Boyle embarks on examining the nature and principles of elements, focusing on the limitations and ambiguities in conventional chemical doctrines. The opening of the work serves as an introduction where Boyle outlines the context and purpose of his discourse. He sets the stage for a philosophical debate, introducing characters like Carneades, who exemplifies skepticism towards established doctrines. Boyle hints at discussions centered around the nature of matter, specifically questioning the validity of the elemental theories proposed by the Alchemists and Aristotelian philosophers. He emphasizes an empirical approach, advocating for the examination of evidence provided by experiments rather than relying solely on established doctrines. Through a civil dialogue format, Boyle aims to address the doubts surrounding conventional chymical principles and thereby enrich the understanding of the fundamental nature of materials.