IN a recent communication, Chanturishvili1 reports his re-investigation of the detailed embryology of the lens in Amphibia and refers to work on higher forms in his laboratory at Tiflis. He and his fellow-workers, in particular Sikharulidze2, are of the opinion that the lens fibres are derived from cells which are neural in origin, and which require for the initiation of fibre production the products of the cytolysis of epidermal elements.