A catalogue of the very extensive and valuable collection of botanical prints, drawings, and books of drawings : the property of the late John Earl of Bute : comprising many hundred capital botanical drawings on paper and vellum : likewise all the plates, plain and coloured, of the botanical works then extant : the whole collected at a vast expense, and forming a most complete illustration of the Species Plantarum : arranged for convenience of sale accotding to the Linnæan System : likewise, a very good collection of books on botany and natural history : which will be sold by auction by Leigh and S. Sotheby, booksellers, at their house, no. 145, Strand, opposite Catherine Street, on Thursday, April 20, 1809, and five following days, at 12 o'clock.