SCIENTIFIC workers in general and botanists in particular will join in congratulations and good wishes to Sir David Prain on the occasion of his eightieth birthday, which he celebrated on July 11. Sir David Prain's career as a botanist began with his appointment as curator to the Calcutta Herbarium some fifty years ago. After twenty-one years' distinguished service to the cause of botany, both pure and applied, in India, Sir David was appointed to the directorship of the Royal Botanic Gardens, Kew, a post which he occupied no less successfully for seventeen years. On the present occasion, however, we think not merely of his many services to the welfare of science but also of his personality that has gained for him both the esteem and the affection of his colleagues. It was this personality and his wise council that rendered Sir David so eminently successful during his presidency of the Linnean Society and of the Imperial Botanical Congress, and caused him to be in so great demand as a chairman. That his kindly charm and valued advice may be long spared to us will be the wish of all his colleagues.