The following results are a contiunation of the work already described, and the experiments have been carried out upon rats inoculated with the same strains of Nagana and Surra:— In these rats the livers were found to be pale and fatty, and the kidneys degenerated: these were pale and fatty, with fibrous streaks, and the urine of Nos. 12 and 16, found in the bladder post mortem , contained albumen. They did not die of the disease, as no trace of trypanosomes could be found in either of them, but of the degenerative changes mentioned.