'Elements of Criticism,'' by Henry Home, Lord Kames

''Elements of Criticism,'' by Henry Home, Lord Kames, 1785, Edinburgh: Printed for John Well and William Creech, sixth edition, Volumes I-II (complete), each title page stamped ''Geo. R. Brush, M.D., US Navy, Sayville, Long Island, New York,'' 518 pages and 573 pages. Tanning, foxing, staining. Each book 8-1/2''l, 5-1/2''w. Provenance: Acquired by descent from Dr. George R. Brush, of the settling Brush family of Southold, Long Island, New York.