IN 1921 Cadenhead and Jacques,' impressed by the fact that lead may find its way into smoking tobacco from the foil in which it may be wrapped, performed an experiment to show that, at least when lead was added to the tobacco to the extent of 17 per cent, small quantities might be volatilized during smoking and thus pass into the smoker's system. In 1929 Reitzel 2 summarized the work that had been done on poisoning resulting from lead in snuff. One other publication 3 on this subject has since appeared. No references to the occurrence of lead in chewing tobacco have been found. In all the publications mentioned the presence of the lead was attributed to the use of lead chromate to improve the color of snuff, or to contamination from the lead containing foils in which the products were wrapped. The lead content is stated to have been over 3 per cent in one case. It is probable that cases of such gross contamination are rare today, but since lead arsenate is used in protecting growing tobacco from damage by insects, it is evident that many manufactured tobacco products will contain at least traces of lead.* Reitzel2 refers to this possible source of contamination. The literature ap