With the object of getting as many people as possible to take quinin every day, each district physician had attached to his staff one or more quinin dispensers. This quinin dispenser was a man furnished with quinin in various forms, who spent the day going about among the laborers offering them quinin. It was the endeavor of the district physician to have each laborer once a day offered quinin. The dispenser carried with him what was known on the Isthmus as quinin tonic. This was a quinin solution made up so that each ounce should contain five grains of quinin. Other ingredients were added so as to make it attractive in smell, taste and appearance. The quinin dispenser also carried with him quinin pills, capsules and tablets, and the patient was allowed his choice. The Commission ran a large number of hotels and eating-houses, where all classes of employees were fed. Quinin tonic and quinin tablets were placed on the tables of all these eating-houses and messes, and an educational campaign was vigorously pushed among the employees, with the idea of teaching them what was aimed at by taking quinin in this way. No attempt was ever made to force anyone to take this prophylactic quinin, but explanation and persuasion were used to their fullest extent. By these methods we succeeded, when the use of quinin was at its maximum, in getting our force to take about forty thousand doses per day. The men responded very heartily and loyally to this system of education. I was very much gratified at the results, and feel confident that no system of compulsion could have been as successful. I am satisfied that during the early years of construction, before our other anti-malarial work had produced results, this giving of prophylactic quinin on so large a scale was of the very greatest use to us. Under some circumstances we required our employees to take quinin. At Taboga, down in Panama Bay, we had a convalescent hospital where the men were sent to spend a week or two when convalescing from the severer forms of malarial fever. A man with malarial parasites in his blood was a source of infection and of danger to his well companions. With the idea of being certain to kill all the parasites in his blood, he was required to continue large doses of quinin for a week or ten days after the stoppage of his fever. But such is the nature of man that as soon as you begin to force him to do a thing, from that moment he begins to seek ways by which he can avoid doing the thing you are trying to force upon him.