An essay on the immateriality and immortality of the soul, and Its Instinctive Sense of Good and Evil; In Opposition to the Opinions advanced in The Essays introductory to Dr. Priestley's Abridgment of Dr. Hartley's Observations on Man. To which are added, Strictures on Dr. Hartley's Theory; Thoughts on the Origin of Evil; and Proof of the contradictory Opinions of Dr. Priestley and his Author. With an Appendix, In Answer to Dr. Priestley's Disquisitions on matter and spirit. By the author of The Letters in Proof of a particular, as well as a general Providence, Which were addressed to Dr. Hawkesworth (on his Publication of the Voyages round the World) under the Signature of a Christian.