Introduction, 11 India, plague in, 24 Indo-China, plague in, 24 Infection through digestive tract, 29 Ingestion, plague, 29 India, rat fleas of, 32 Italy, rat fleas of, 32 India Plague Commission on contagion, 33 on chronic rat plague, 35 Immunity, plague, 36 India, effect of superstitions and religious belief in, 43 Isolation of sick, 56 Importation of plague from Amoy, 59 Iloilo, P. I., plague in, 70 Insanitary basements, 72 Interpretation of the rat catch and plague incidence, 91 Infected houses, guinea-pigs as indicators of, 96 India Plague Commission, 100 Insects found to contain Bacillus pestis (Table III), 138, 139 Importance of rapid diagnosis of plague, 166 Japanese anti-plague serum, 18 Japan, plague in, 22, 25 Java, plague in, 25 Japan, bacterial rat poisons, use of, in, 54 Jackson, Dr. T. W., correspondence, 75 Java, Batavia, Dutch India, 77 Xenopsylla cheopis in, 77 variations in number of fleas per rat, 78 epidemiologic facts concerning plague in, 82 Javan village house, 84 "bale bale," rats in, 86 Java, sawah rat of, 100 Jumping ability of rats, 102 Java, studies of rat cadavers in, 104 Kerr, Dr. J. W., 31 Korn, Dr. W., U. S. P. H. Service, 87 Kerosene as an insecticide, 94 London, great plague of, 21 Lantz, Dr. D. E., 31 classification of rats, 99 Lœmopsylla cheopis, 32 Louse, conveyance of B. pestis by, 33 Loeffler, mouse-typhoid bacillus of, 53 Laboratory-proven plague rats and others in Manila, 61 Light material houses in Tondo, 71 Manila, 85 Letter of warning and appeal, 125, 126 Location of rat cadavers in relation to human plague cases, Manila, 162, 163