Letters Concerning Mind. To which is added, A Sketch of Universal Arithmetic; Comprehending the Differential Calculus, And the Doctrine of Fluxions [WITH] A Summary View Of The Soul's Perceptive Faculties; And Also Of Dialectic or Logic: Introduction To The Theory of Mind

London: John & James Rivington, 1792. First edition. leather_bound. Full straight-grained red morocco. Aeg. Very good. 2 vols. in one. 90 & 79 pages. 21 x 23.5 cm. Errata leaf, published posthumously. LOWNDES 1846. "An excellent work, full of profound and abstruse learning." This copy with the leather Johnsonian bookplate of R. B. Adam. Binding attributed to Roger Payne. Minor, intermittent toning, light stain back cover, marbled endpapers, inner dentelles, gilt cover border panels.