Margaret Cavendish: Observations Upon Experimental Philosophy - Paperbackby Margaret Cavendish (Author), Eileen O'Neill (Editor) Margaret Cavendish's Observations upon Experimental Philosophy holds a unique position in early modern philosophy. Cavendish rejects the picture of nature as a grand machine that was propounded by Hobbes and Descartes; she also rejects the alternative views of nature that make reference to immaterial spirits. Instead she develops an original system of organicist materialism, and draws on the