The majority of observers at present regard thymol as the vermifuge of choice in the treatment of uncinariasis. The work of Stiles and of the Porto Rican Commission has clearly demonstrated its value. The administration of thymol, however, is associated with certain very definite disadvantages: 1. It does not succeed, in a certain number of individuals, in eradicating the infection. 2. Its ingestion is accompanied in about 45 per cent, of cases by disagreeable aftereffects, as has recently been pointed out by Stiles and Boatwright.1 3. In a few instances, it has produced fatal poisoning. 4. At present, owing to conditions brought about by the European war, the supply of thymol is limited and its cost high.
It seems desirable, therefore, to call attention to the use of a vermifuge which has apparently been entirely overlooked in this country in the treatment of hookworm disease and whose value in