1 John Abbot and James Edward Smith | The natural history of the rare lepidopterous insects of Georgia, 1797, 2 volumes

2 Eleazar Albin | A natural history of birds, 1731-1734, 2 volumes, contemporary calf gilt

3 Eleazar Albin | A natural history of English insects, 1735, contemporary calf

4 Eleazar Albin | A natural history of spiders, and other curious insects, 1736, contemporary calf gilt

5 Eleazar Albin | A natural history of birds [and] A natural history of English insects, 1738-1749, 4 volumes, contemporary calf

6 William Alexander | Picturesque Representations... Chinese, Austrians, Russians, Turks, English, 1814, 5 volumes

7 Henry Andrews | The botanist's repository, London, 1797 [-1812], 10 volumes, green armorial morocco gilt

8 Audebert and Viellot | Oiseaux dorés ou a reflets métalliques, Paris, 1802, 2 volumes, contemporary russia

9 John James Audubon and John Bachman | The Viviparous Quadrupeds of North America, New York, 1845-1848, 3 volumes

10 Jacques Bailly | Diverses fleurs mises en boucquets, Paris, circa 1670

11 Jean-Baptiste Barla | Flore illustrée de Nice et des Alpes-Maritimes. Iconographie des orchidées, Nice, 1868

12 James Bateman | The orchidaceae of Mexico and Guatemala, London, 1843

13 Franz Bauer | Illustrations of orchidaceous plants, 1830-1838

14 William Beebe | A monograph of the pheasants, 1918-1922, 4 volumes

15 John Whitchurch Bennett | A Selection of... Fishes... of Ceylon... third edition, 1841

16 Lady Harriet Bentinck | An album of flower drawings, mid-nineteenth century

17 Jean-Pierre Bergeret | Phytonomatotechnie universelle, Paris, 1783-1784, 2 volumes, contemporary calf

18 Abbé Lorenzo Berlèse | Iconographie du genre camellia, Paris, [1839]-1841-43

19 Adolf Bernhard Meyer and L.W. Wiglesworth | The birds of Celebes, 1898, 2 volumes

20 Friedrich Justin Bertuch | Die Rosen-arten nach Natur, 1804, contemporary morocco portfolio

21 Pancrace Bessa et al. | An album of botanical drawings by Bessa et al. from the collection of the Duchesse de Berry

22 Bird Studies | Watercolour drawings by Lodge, Wolf, Huggins and Bright, 2 volumes, 1820-1899

23 Birds | A portfolio of ornithological drawings, [circa 1790]

24 Frans Ernst Blaauw | A monograph of the cranes, Leiden, 1897, original pictorial cloth gilt

25 Blume | Flora Javae, 1828-1858; Rumphia, 1835-1848, together 8 volumes (bound in 7), green half morocco

26 James Bolton | Harmonia ruralis... on British song birds, London, 1845, half morocco

27 Charles Lucien Bonaparte | Iconographie des Pigeons non figures par Mme Knip, Paris, 1857

28 Edward Thomas Booth | Rough notes on the birds observed... in the British Islands, 1881-1887, 3 volumes

29 W. Knatchbull-Hugessen, 3rd Baron Brabourne, and Charles Chubb | The Birds of South America, [1913]-1917, 2 volumes

30 Gracius J. Broinowski | The Birds of Australia, Melbourne, 1890-1891, 6 volumes

31 George Brookshaw | Groups of fruit [Six birds; Groups of flowers]... second edition, 1819

32 George Brookshaw | The Horticultural Repository, 1823, 2 volumes

33 Peter Brown | New illustrations of zoology, London, 1776, green morocco

34 Thomas Brown | Illustrations of the genera of birds, 1845, bound in the original parts

35 Bry | Florilegium renovatum et auctum, Frankfurt, 1641, coloured plates, calf gilt

36 Buffon | Histoire naturelle des oiseaux, Paris, 1771-1786, 10 volumes, contemporary calf

37 Buller | A history of the birds of New Zealand, 1888; Supplement, 1905, together 4 volumes

38 Gilbert Thomas Burnett | An encyclopaedia of useful and ornamental plants, 1852, 2 volumes

39 Arthur G. Butler | Foreign finches in captivity, [1894]

40 "Cape Heaths" | An album of watercolour drawings of South African ericaceous plants, mid-nineteenth century

41 [Castelli] | Exactissima descriptio...plantarum... in Horto Farnesiano, 1625, with Collaert's Florilegium, [1590]

42 Mark Catesby | The natural history of Carolina, Florida and the Bahama Islands... London, 1731-1743, 2 volumes

43 Chandler and Booth | Illustrations and descriptions... Camellieae, London, 1831, Chandler's own copy

44 Alfred Chandler | A collection of nineteen watercolour drawings

45 Antoine M. Chazal | Flore Pittoresque, 1818, presentation binding, red straight-grained morocco

46 Cirillo | Entomologiae neapolitanae specimen primum, Naples, 1787, calf-backed boards

47 Mrs James Cookson | Flowers drawn and painted after nature in India, circa 1835

48 Richard Crawshay | The Birds of Tierra del Fuego, 1907, morocco backed cloth