NICHOLSON, William. An Introduction to Natural Philosophy. London: For J. Johnson, 1787. 2 volumes. 8° (206 x 122mm.). 25 folding engraved plates, half-titles. Contemporary tree calf, flat spines ornately gilt, red and blue lettering pieces, yellow edges. Provenance: John Taylor (contemporary signature on title-pages). -- PALEY, William. The Principles of Moral and Political Philosophy. London: For R. Faulder, 1793. 2 volumes; A View of the Evidences of Christianity. Ibid. 2 volumes. Together 4 volumes. 8° (214 x 126mm.). Half-titles. Contemporary mottled calf, flat spines gilt, black lettering pieces, double gilt fillet round sides. Provenance: William Downes (bookplate) -- ZIMMERMAN, J.G. Solitude Considered. London: For J. Fairburn and A. Constable, 1797-98 [preceded by Tissot's Life of Zimmerman, 1797]. 2 volumes. 8° (206 x 121mm.). Engraved plate. Contemporary light calf, flat spines ruled in gilt, red lettering pieces (one cover very lightly scuffed). Provenance: Sir James Colquhoun of Luss (armorial bookplate); and 4 others (Watts' Improvement of the Mind, 2 volumes, 1795; Zimmerman's Solitude, 2 volumes, 1799). (12)