'Experiments on the Treatment of Animals Infected with Trypanosomes by means of Atoxyl, Vaccines, Cold, X-rays and Leucocytic Extract; Enumerative Methods Employed', by Prof. Major R. Ross and J.G. Thomson. Reprinted from the 'Annals of Tropical Medicine and Parasitology Vol. IV, No. 4, 3 March 1911. Issued by The Liverpool School of Tropical Medicine. An abstract of this paper was read before the Royal Society on December 8th 1910. March 1911