Extension of plague, 19, 22 Egypt, plague in, 20, 23, 25 East Africa, plague in, 22 Epidemics, effect of seasonal conditions on, 34 wane of, 35 Epidemic pneumonic plague, 38 Economic importance of rat destruction, 42 Estimations of loss by U. S. Agricultural Department, 42 Effect of superstitions and religious beliefs in India, 43 of rat poisoning and trapping, 73 Epidemiologic facts concerning plague in Java, 82 Examination of fatal cases of plague (Table I), 130 of cases of plague who recovered (Table II), 131 Experimental animals, plague in, 139-145 Flea conveyance of B. pestis, 30 Flies, conveyance of B. pestis by, 33 Fowls, plague conveyance by, 29 Flea's stomach, capacity of, 31 bite and plague conveyance, 31 Flea prevalence, effect of seasonal conditions on, 34 Fox, Dr. Carrol, 31, 70 Fleas, dog, 32 cat, 32 mice, 32 ground squirrel, 32 activity of, 33, 98 Fumigation of ships, 46 Flea carriers, objection to domestic cats and dogs as, 55 Favorable conditions for spread of plague in Manila, 61 First Manila cases in 1912, 62 Fleas and their habits, 77 bionomics of, 77 rat, of Philippines, 78 of Australia, 78 of Italy, 78 cat, 78 per rat, variations in number of (Java), 78 Flea larvæ, effect of temperature and humidity on, 79 imago, effect of temperature and humidity on, 79 Fasting fleas, duration of life of, 79 Flea prevalence, prediction of plague extension from, 80 natural enemies of, 97 activity of, 33, 98 Field rat, 99 Family Muridæ, 99 Ferocity of Mus decumanus, 102 Feasibility of fighting plague successfully, 162 of Manila policy of plague control, 162 Great plague of London, 21 Great Britain, plague in, 22 Ground squirrel, California, 28 Great Britain, rat fleas of, 32 Ground squirrel, fleas of, 32 Gärtner's B. enteritidis, 54 Geographic grouping of plague cases in Manila, 63 Ground-floor sleeping quarters, 72 General cleaning campaign, Manila, 88 Garbage cans, sanitary orders, Manila, 93 Guinea-pigs as indicators of infected houses, 96 Genus Mus, 99 Gray rat, 99 Gunomys (Nesokia), 100 Gnawing ability of rats, 102 German Plague Commission, 149 History of plague, 19 Hawaii, plague in, 22 Hong Kong, plague in, 24, 58, 154 Heiser, Dr. V. C., 31, 58, 70, 75, 89 Hobdy, Dr. W. C., 31 House cats as rat catchers, 55 Half wild cats as rat catchers, 55 Human plague in Tondo district, Manila, 68 Houses in Tondo, light material, 71 House disinfection by spraying, 94 Household rat destruction, plan for, 111 Hong Kong, notes on plague in, by Dr. Roberg, 153, 154, 155, 156, 157, 158, 159, 160 the work of the Sanitary Board, 158 abatement of plague in 1914, 160 Haffkine vaccine, 178, 179