“…report only one skin test with tricresylphosphate, a widely used plasticizer (non-volatile solvent) for nitrocellulose and some resins. This gave a negative result, but it is perhaps worth recalling that Berkoff (1938) believed this substance to be the probable cause of a sensitization dermatitis related to the wearing for ten days of spectacle frames of synthetic resin plasticized with tricresylphosphate. Hutner (1941) states that tricresylphosphate is a violent poison if ingested.-I am, etc., Pathology Department, The University, Glasgow, A. C. LENDRUM.…”