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•Catalogue of Micrographs of woods structure

•Correspondence with Jonn Mackay (1800-1801), G.A. Walker Arnott (1828), P. Neill (1828), J. McNab (1834), R. Graham (1826), and also referenced to correspondence with G. Don (1802-1812) and W.M. McNab (1818 and 1823).

1 photo album marked 'Vol 2' containing 42 prints of alpine plants; 2 separate prints mounted on card (Cyclamen repandum and Primula reidii); and 3 RHS certificates dated 1947, 1959, and 1964

drawings and photographs used to illustrate Mann's thesis and drawings on permatrace used in other publications.

Added in 2020 (RBGEA2020/007):

3 sets of postcards depicting algae or diatoms as follows:

• 3 envelopes of Algal picture postcards from M. Adei; Scanning electron micrographs of diatoms (1994); Marine algae in coral reef (1993); and Algal vegetation in cold current area (1993)
• pack of 12 poscards from the British Bryological Society (1994)
• pack of Stereographs of the Diatom World, The Educational Association of Algae (2002)

2 labels for identifying part of the process of India Rubber / Gutta Percha production and 7 book plates on note paper forming a small collection.
Book plates: Churchill Babington, John Hutton Balfour, Henry Collins, Daniel Cresswell, Sir Compton Domvile, William Watson and 1 unidentified.
Accrual: Article: 'India Rubber' by James Collins, formerly Government Economic Botanist and Librarian, Straits Settlement, etc. as published in 'The Cottager and Artisan', September 1897, pp.107-108, published by the Religious Tract Society, London. Also, a card with a poem on it: 'The Twins' by J. Rushton, on the back of which is a Note about the opening hours of the India Office Museum.

1 sheet with John Sibthorp's book plate attached to it, alongside email correspondence outlining the discovery.

One Field diary produced by the Wild Flower Society in which wild flowers are listed. Judith Basden has filled in dates and locations for ones she has found giving us a botanical record for the area mainly around Bonnyrigg.

The 28 photographs in this series, taken by Pietro Guidi in San Remo, Italy, in the 1870s formed part of the Photographic Flora of San Remo, supervised by local pharmacist Francesco Panizzi. Each photograph has a Latin name, locality and a flowering time and som are hand coloured.

GB 235/ASH/1/1-16: 1 box of 16 mounted photographs showing the felling of the Ash tree in 1992; and
GB 235 ASH/2: part of one of the tree limbs sliced into sections by Tim Stead to show the damage done internally by fungus; tree limb sections can be arranged to form an artistic sculpture.

19 photographs, mainly of plants including orchids - Sarcochilus, Dendrobium, Spiranthes, Aeginetia, Dipodium, Impatiens and Rhododendron