1. BARB, M. AND GLENNY, A. T. (1945) : Some practical applications of immunological principles. J. Hyg., Camb., 44, 135-142.
2. BARR, M. AND JONES, M. L. (1951) : Factors influencing the development of potential immunity and the character of the secondary response. Brit. J. Exptl. Pathol., 32, 231-245.
3. BASU, P. N. AND ROY, R. N. (1963) : The incidence of natural Clostridium welchii α-antitoxin in Indian equines: Its influence on the results of antigenic stimulus. J. Hyg., Camb., 61, 213-215.
4. GLENNY, A. T. (1925 a) : The principles of immunity applied to protective inoculation against diphtheria. J. Hyg., Camb., 24, 301-320.
5. GLENNY, A. T. (1925 b) : Diphtheria antitoxin in the blood of normal horses. J. Pathol. Bacteriol., 28, 241-250.