There is probably no subject in the whole domain of ophthalmology in regard to which more profound divergences of opinion between those best qualified to judge may be found than in regard to the efficacy and proper mode of administration of tuberculin in the treatment of ocular inflammation presumably due to tuberculosis. There are many who look on the drug as useless or dangerous. Among those who use the injections with the greatest enthusiasm, the poor results of their colleagues are explained as due to an improper mode of administration. However, one finds among those who advocate the use of tuberculin some who advise its intracutaneous administration, some who recommend subcutaneous injection and others who recommend intramuscular injection. Again one finds that the injections should be given every two weeks, twice a week, every other day; that they should be given in doses insufficient to produce a perifocal