It is now generally accepted that the use of tobacco is definitely contraindicated in many conditions in which the circulation is impaired.1It often becomes necessary, therefore, for physicians to insist that patients suffering from such impairment stop the use of tobacco completely in any form and for the rest of their lives. We have advised termination of the tobacco habit in more than 100 cases during the past two years. If the physician is emphatic enough, pointing out clearly the dangers of continuing, the task can be accomplished in many instances without the strain anticipated by the patient. A certain percentage always remain, however, to whom sudden or even gradual deprivation of tobacco is a hardship. For this group substitutions such as gum chewing have been recommended from time to time but have been found generally unsatisfactory. Recently Dorsey2presented an encouraging report on the use of