INDEX 



551 



Horsehair snakes, popular supersti- 

 tion, 4; see Nematomorpha. 



Horse leech, 316. 



Horses, and oriental sore, 86; 

 spotted fever tick, 189, 363; 

 Gastrodiscoides, 229; leeches, 

 317, 319; Ornithodorus savignyi, 

 361; Otiobius megnini, 365; 

 surra, 487; hosts of stable-flies, 

 505; hosts of Gastrophilus hcem- 

 orrhoidalis, 516. 



Housefly, see Musca domestica. 



House mosquito, of tropics, see 

 Culex quinquefasdatus; of 

 temperate zones, see Culex pip- 

 iens. 



HOWARD, L. O., 148, 429, 437, 442, 

 444, 447, 455, 458. 



HOWLETT, F. M., 469, 470. 



HUME, 81. 



Hyalomma, 366. 



Hydatids, nature of, 235, 248-261; 

 distribution, 248; life history, 

 of Echinococcus, 248; develop- 

 ment, 248-249; multilocular, 

 250; effects on host, 250; pre- 

 vention, 250-251. 



Hydrocyanic acid, for fumigation, 

 of bedbugs, 383, 385; method, 

 383-385; effectiveness, 385- 

 386; for fleas, 421. 



Hydrogen peroxide, for balanitis, 

 73B. 



Hydrophobia, see Rabies. 



Hymenolepis, prevention, 238; cys- 



ticercoids in fleas, 414. 

 diminuta, 244. 

 murina, 242. 



nana, discovery, 7; oil of cheno- 

 podium for, 237; prevention, 

 238; 242-244. 

 nana fraterna, 242. 



Hymenoptera, parasites of tsetse fly 

 pupae, 503. 



Hypoderma 6o?/is, 515-516. 

 lineata, 515-516. 



Hypopharynx, 326. 



Jlypopus, 339-340. 



Hypopygium, 492. 

 Hypostome, 354. 



Iceland, hydatids, 248, 250. 



Ichneumon flies, and Dermatobia, 

 452. 



Ichthyol, for microfilarise, 306; in 

 ointment for chiggers, 420. 



Idaho, spotted fever, 189. 



IDO, Y., 65. 



IJIMA, J., 252, 253. 



Illinois, Moniliformis clarki, 285. 



Immunity, natural, 19-22; artificial, 

 22-23; passive, 22; of Protozoa 

 to drugs, 34-35; in relapsing 

 fever, 47; in infantile kala-azar, 

 84; in oriental sore, 87; in 

 Rhodesian sleeping sickness, 94; 

 reactions among trypanosomes, 

 96-97; in malaria, 162-163; 

 in yellow fever, 71, 72; in den- 

 gue, 183, in phlebotomus fever, 

 185; in trichiniasis, 294-295. 



Immunization, history, 8-9; in re- 

 lapsing fever, 47; in infectious 

 jaundice, 68; in yellow fever, 

 72; in oriental sore, 88; against 

 trypanosomes, 106. 



Immunology, development of, 9. 



IN ADA, R., 65. 



India, plague in, 3, 411; relapsing 

 fever, 42, 43, 44; kala-azar, 77; 

 oriental sore, 85; amebic dys- 

 entery, 135; malaria, 147; ful- 

 minant malaria, 163; Rhino- 

 sporidium, 173; dengue, 182; 

 phlebotomus fever, 184; Clonor- 

 chis sinensis, 224; Gastrodis- 

 coides hominis, 229; Taenia sa- 

 ginata and dung-eating habits of 

 cattle, 240; hookworm disease, 

 262; use of shoes, 265; land- 

 leeches, 319-320; Rhizoglyphus 

 buski, 340; Ornithodorus sa- 

 vignyi, 361; bedbugs and kala- 

 azar, 377; cat flea, 416; chigger, 

 420; malaria-carrying Anoph- 

 eles, 441; Aedes calopus, 448; 



