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•Paper titled ‘Lectures on the Valuation of Woodlands and the Disposal of their Produce, with its Transport, Conversion, Qualities and Uses’.

Folder containing a series of six lectures on ‘Soil’ at Imperial College of Science and Technology, London. Starting on 3rd February 1920 and ending on the 9th of March 1920. (A series of 6 lectures of which the second is missing) No lectures had been given on this subject in UK since 1896. Therefore timely to bring up to date the science of soil physics.

1 photograph album showing the range of activities of the Scottish Natural History Society at the end of the 1890s.

•Prize essay, ‘The Origin and Development of the Embryo in Phanerogamous Plants’ (July 1869)

•Notes on his Rocky Mountain and Appalachian Expeditions (1933-1937)

•Copy of lists of Flora and Fauna (1767-1771)
•Papers including transcriptions of correspondence and newspaper articles (1767-84)

Galloway, Robert (Secretary to Royal Scottish Arboricultural Society) Correspondence filed in “Balfour, I. Bayley” papers under “Arboricultural Society”

1 folder containing correspondence, map, 3 photographs and report outlining the discovery of a hybrid orchid, Rhizanthera chevallierana, on Ben Lawers by David Mardon in 1979. The folder was compiled after a search for photographs of the plant taken by Mardon in 1984. Contents include, email correspondence between Clive Stace, Adele Smith and Lorna Mitchell outlining the search for photographs and compilation of the folder (2013), report and notes compiled by David K. Mardon in 1984 outlining his find, map showing where he found it, correpondence between Douglas McKean, [Paddy Woods], R.H. Roberts and David Mardon regarding the identification of the orchid, and three photographs taken by Mardon.

Folder of notes comprising Ian Hedge's attempts to discover more about a set of Egyptian specimens in the RBGE Herbarium, mostly incorporating the name of Delile [or Delille, Delisle], but sometimes also, Vahl, Desfontaines, Lippi, Vaillantes or Zorsbial [Forskal?] 'Scattered throughout the Edinburgh herbarium are a number of specimens, probably a few score, which appear from the evidence of the labels, to be an early Egyptian collection. In common with some other of the older collections they are often mounted on sheets which have other specimens and labels on them.' The file includes letters written to other institutions by Ian Hedge with their responses between 1983 and 1986.
The collection also includes a set of correspondence between ,B.L. Burtt and Dr Hagerup, Copenhagen, dating to 1955 and relating to similar/connected collections made by Schumacher, Vahl and Forskal.

Folder containing a notebook, correspondence, a draft copy of a paper titled ‘History of Scottish Mycology’, and a reprint of ‘History of Scottish Mycology’ by John Ramsbottom, Transactions of the British Mycological Society, Vol. 46, Part 2, (1963)