THE fiftieth anniversary of the moving of St. Paul's School from the City of London to West Kensington, on the western border of Greater London, coincides with the opening of the new biological laboratories. The occasion was celebrated at Apposition on July 5, when the Field Club held an exhibition of its work. After the speeches, the display was visited by the High Master, the Governors of the School and many hundreds of boys and parents. The numerous exhibits indicated how wide are the interests of the members, in all branches of biology and natural history. Worthy of special mention were a large number of experiments in plant physiology, an investigation of irregular nutrition in plants (mycorrhiza, saprophytes and parasites), an ecological survey of sea-shore life and a study of heath and moorland associations, with special reference to mosses. Collections were shown of insects, ferns, seaweeds and fresh-water organisms, while a spiro-meter proved very popular. The Club, which is nearing its fortieth anniversary, has always been a great boon to the naturalists of the School, and in recent years has worked in close co-operation with the Biological Department. A great deal of field work is done, and in the winter, lectures are given by members and others on subjects of which they have made a special study. The Club is exceptionally fortunate in being at the same time within easy reach of the countryside and the authorities at the Natural History Museum, Kew Gardens and the Zoo.