Horticulture – Darwin, Charles – ‘The Formation of Vegetable Mould-through the action of Worms with observations on their habits’ published 1904 (thirteenth thousand with illustrations) original green cloth embossed boards and gilt spine (a/f) together with Herbert H Cousins ‘The Chemistry of The Garden - A Primer For Amateurs and Young Gardeners’ 1st edition 1912 in the original green cloth pictorial boards-internally clean but some discolouration to front and rear endplates otherwise overall G (2)