Prognosis, treatment, conditions and, 173 Plague, serum treatment of, 174 symptomatic treatment, 174 Prophylactic serum and anaphylaxis, 177 Plague vaccines, 178, 179 Quarantine, modified, 56 station, Mariveles, 59 Quiapo, Manila, plague in, 63 Rat fleas of Italy, 32 of Brazil, 32 of Great Britain, 32 of United States, 32 Rats, chronic plague in, 35 subacute plague in, 35 Requisites of the practical sanitarian, 12 Russia, plague in, 26 Rats, wild, plague in, 29 effect of seasonal conditions on, 34 Rucker, Dr. W. C., 31 Rosenau, Dr. M, J., 31 Rat fleas, varieties of, 32 of India, 32 of Australia, 32 Rat population of the world, 41 destruction, economic importance of, 42 extermination methods, 43 natural enemies of, 43 destruction, bacterial viruses for, 43 poisons used for, 43, 44 trapping, 44 traps, varieties, 45 destruction by poisonous gases, 45 Rats, starving, 47 Rat proofing, 48 cost of, 49, 93 infestation of ships, 50 adaptability of, 51 Rat's, methods of entry of, 52 Rat destruction by rat diseases, 53 Resistance of rat to diseases of bacterial causation, 54 Rats and ground squirrels, chemical poisoning of, 54 Rat destruction by domestic animals, 54 catchers, house cats as, 55 half wild cats as, 55 terrier dogs as, 55 on farms, terrier dogs as, 55 Rapid diagnosis, importance of, 56 Rat cadavers, dispersion of fleas in Manila from, 65 plague in Tondo district, Manila, 68 proofing and rat destruction, 72 inapplicable at times, 73 poisoning, trapping, effects of, 73 Rats, birth-rate of, 73 death-rate of, 73 Removal of population in emergency, 74 Rat plague in U. S. Army Commissary warehouse, Manila, 76 fleas of Philippines, 78 of Australia, 78 Rat fleas of Italy, 78 breeding as influenced by climate, 81 in Javan "bale bale," 86 in thatched roofs, 86 dead, in bamboo house timbers, 87 Rat catch, variations in, 88 Rat catching methods, comparative statistics in, 89 Rat catch and plague incidence, interpretation of, 91 Rats, zoölogic classification of, 98 Rat, ship, 99 field, 99 Rats, coloration of, 99 Rat, Norway, 99 gray, 99 barn, 99 sewer, 99 Rats, unreliability of differential points in, 101 conformation of skulls in, 101 gnawing ability of, 102 burrowing ability of, 102 climbing ability of, 102 jumping ability of, 102 swimming ability of, 102 Rat litters, size of, 102 Rats as wire walkers, 103 as rope walkers, 103 Rat cadavers in Java, studies of, 104 time of death as indicated by postmortem changes of, 104 Rats, postmortem changes in (Table), 105 (illustration), 105 Rat runs, notes on, 105 nests, notes on, 105 food, notes on, 105 nests (Manila), breaking up, 106 Rats driven out with formaldehyde gas (Manila), 106 Rat killing with dogs (Manila), 107 Rat's nests in trees (Manila), 110 Rat traps, snakes in (Manila), 111