Printed by J. Archdreacon Printer to the University Three-quarter leather Cambridge 1790
Fair 8vo. 374 pages + errata. 1st edition. Binding worn, endpapers missing, some stains. Working copy. Manuscript ex libris on title-page. John Berkenhout (1726-1791) has been sent to the United States by the British government. In these Letters, he explains the process of knowledge (epistemology) in various fields.