MANY kinds of trees and shrubs now used in forestry and gardening owe their introduction to the pioneer journeys of David Douglas (1799-1834).These early botanical explorations form the subject of a recent paper by F. R. S. Balfour (J. Roy. Hort. Soc., 67, Parts 4 and 5 ; April and May, 1942). Douglas's journey to the North Pacific Coast in 1824 was backed by the Royal Horticultural Society, and resulted in the introduction of such garden favourites as Ribes sanguineum and Berberis aqui folium. New conifers were later discovered, namely, Pinus nobilis, P. amabilis, P. lambestiana Larix occidentalis, Thuja plicata and many others. Neither shipwreck nor illness deterred this intrepid botanist, and while mo st of his journeys were made in North America, he met a rather strange death during a journey in Hawaii.