Grounds of Natural PhilosophyGROUNDSReading editionChapter navigation15 reading sectionsGo to chapterChoose a chapter…GROUNDSNATURAL PHILOSOPHYDUCHESS of NEWCASTLEThe Third Part.The Fourth Part.The Fifth Part.The Sixth Part.The Seventh Part.The Eighth Part.The Ninth Part.The Tenth Part.The Eleventh Part.The Twelfth Part.The Thirteenth Part.The Thirteenth Part. (continued 2)Beginning of this editionNext chapter →NATURAL PHILOSOPHYAll chapters and sections (15)GROUNDSNATURAL PHILOSOPHYDUCHESS of NEWCASTLEThe Third Part.The Fourth Part.The Fifth Part.The Sixth Part.The Seventh Part.The Eighth Part.The Ninth Part.The Tenth Part.The Eleventh Part.The Twelfth Part.The Thirteenth Part.The Thirteenth Part. (continued 2)OFNATURAL PHILOSOPHY →