To the rhododendron enthusiast who is interested in species, a visit to Tower Court, near Ascot, is a must, for it is here that the late Mr. J. B. Stevenson assembled what is probably the finest collection of rhododendron species in the world, and though it was a sad loss to horticulture when Mr. Stevenson passed away, the world can be cheered to know that Mrs. Stevenson is also a very able and