246. Rudolph Ackermann | [Flowers: A Series of Studies from Nature Drawn on Stone, 1819]

247. Rudolph Ackerman | The cabinet of the arts... second edition, London, [1821], contemporary half calf

248. Rudolph Ackermann | The floral album, London, 1837, contemporary red half morocco

249. Eleazar Albin | A black-backed kingfisher, watercolour drawing

250. Sergius Alphéraky | The geese of Europe and Asia, London, 1905, crushed citron morocco gilt by Zaehnsdorf

251. James Andrews and Louisa Anne Twamley | Flora's Gems, London, [before 1837], original pictorial cloth gilt

252. James Andrews and Louisa Anne Twamley | Flora's Gems, London, [before 1837], brown cloth gilt rebacked

253. Henry C. Andrews | The Heathery; or a monograph of the genus Erica, 1804-1806, vols 1-3 (only), mottled calf

254. Henry C. Andrews | Geraniums, London, 1805

255. Henry C. Andrews | Roses: or a monograph of the genus rosa, 1805-28, 2 vols, contemporary boards

256. Franz Antoine | Der Wintergarten in der Kaiserlichen Koniglichen Hofburg zu Wien, Vienna, 1852, blue velvet gilt

257. Mary Ann Bacon | Winged thoughts, London, 1851, original blind-stamped calf

258. E.C. Stuart Baker | The Indian ducks and their allies, London, 1908, contemporary green half morocco

259. Valentine Bartholomew | A selection of flowers adapted principally for students, London, 1822, green half morocco

260. James Bateman | A second century of orchidaceous plants, London, 1867, original green cloth gilt

261. James Bateman | A monograph of odontoglossum, London, 1874, dark green half morocco by Sangorski and Sutcliffe

262. Ferdinand Bauer | Illustrationes florae Novae Hollandiae, London, 1989, limited facsimile edition, no. 27 of 35

263. Robert Bentley and Henry Trimen | Medicinal Plants, London, 1880, 4 vols, contemporary green half morocco

264. Pierre Berjon | Dessins inedite... publié par la Société des amis des arts de Lyon, Paris, 1847-48, contemporary boards

265. Elizabeth Blackwell | A curious herbal, London, 1737-39, 2 volumes, brown half morocco

266. Elizabeth Blackwell | Herbarium Blackwellianum, Nuremberg, 1750-73, 5 vols of 6

267. Francis Blomefield | An essay towards a topographical history of the county of Norfolk, Fersfield, 1739-75, 5 vols

268. T. Bonnel | Botanical manuscript, "Représentations des plantes", Bordeaux, 1822, contemporary red morocco gilt

269. Aimé Jacques Alexandre Bonpland | Description des plantes rares cultivées à Malmaison et à Navarre, Paris, 1813

270. Book box | A large book-style case made out of a book binding, French, early eighteenth century, or later

271. French Royal botanical manuscript | Manuscript on vellum, presented to the comte de Chambord, 1853

272. Botanical drawings | An album of botanical drawings, nineteenth century, finely bound

273. Carington Bowles | Bowles's Monthly Florist, London, 1769, nineteenth-century half calf

274. Carington Bowles | Bowles's florist, London, [c.1800], nineteenth-century half calf

275. Robert Bowyer | An illustrated record of important events in the annals of Europe, London, 1815, three quarter morocco

276. William Bradford | Sketches of the country, character, and costume in Portugal and Spain, London, 1812, later cloth

277. Jacob Breyne | Exoticarum aliarumque minus cognitarum plantarum centuria prima, Gdansk, [1674]-78, contemporary calf

278. British Ornithologists' Union | Reports on the collections... in Dutch New Guinea, London, 1916, half morocco

279. Edward Adveno Brooke | The Gardens of England, London, [1857], original boards

280. P.J. Buc'hoz | Collection précieuse et enluminée des fleurs plus belles et les plus curieuses, [1776], 2 vols in one

281. P.J. Buc'hoz | Premiere [Seconde] Centurie de Planches, Paris, [1775-]1781, 2 vols, red morocco gilt

282. P.J. Buc'hoz | Le Jardin d'Eden [with similar works], Paris, 1779-83, 4 volumes, red morocco gilt

283. P.J. Buc'hoz | Herbier ou collection des plantes médicinales de la Chine, Paris, 1781, contemporary red morocco gilt

284. Georges-Louis Leclerc, comte de Buffon | Oeuvres Complettes, Paris, 1749-88, 35 (of 38) vols, contemporary red morocco gilt

285. Georges-Louis Leclerc, comte de Buffon | Histoire naturelle, générale et particuliere... nouvelle edition, 1798-1802, 128 vols, tree calf gilt

286. Mary Ann Burnett | Plantae utiliores; or illustrations of useful plants, 1842–1846, 4 volumes

287. Priscilla Bury | A Selection of Hexandrian Plants, London, 1831, modern red half morocco

288. A.P. de Candolle and P.-J. Redouté | Plantarum succulentarum historia, Paris, 1799, 2 vols, contemporary red morocco

289. de Candolle | Plantes Rares du Jardin de Genève, Geneva, 1825, 4 parts in 1 volume, contemporary cloth-backed boards

290. William Cavendish, Duke of Newcastle | A general system of horsemanship, London, 1743, 2 vols in one

291. François Pierre Chaumeton | Flore médicale, Paris, 1814-20, 7 vols bound in 8, contemporary russia gilt by Bibolet

292. Chinese School | Album of watercolour drawings of flowers, birds, fruit, figures and landscapes, nineteenth century

293. Chinese School | Album of watercolour drawings of plants, insects and fruit, nineteenth century