Written in 1661 by the founder of Boyle's Law, a major figure in the scientific revolution of the 17th century, this chemistry classic departs from alchemical tradition by asserting that all natural phenomena can be explained by the motion and organization of primary particles. Contents: Introduction. Physiological Considerations Touching the Experiments Wont to Be Employed to Evince Either the Four Peripatetick Elements, or the Three Chymical Principles of Mixt Bodies. Six Parts. Conclusion.