370 



INDEX 



Culex and Anopheles, differentia- 

 tion, 28 



development, 25 



effect upon live stock, 31 



larvae, 24 



pathologic importance, 26 



protection against, 31 



pupae, 25 



range, 24 



relationship to filariasis, 26 



relationship to malaria, 26, 313, 320 



relationship to yellow fever, 26, 29 

 Multiceps gaigeri, 181 



multiceps, 179, 194, 204, 206, 207 



serialis, 179 

 Musca domestica, 11, 37, 189 



vomitoria, 52 

 Muscidffi, 20, 37 

 Mutualism, 2, 7, 



example of, 2, 7 

 Myasis, 50 



N 



Nagana, 45, 314, 330 



etiology, 45, 314, 330 



investigations by Bruce, 45, 314, 

 330 



occurrence, 330 

 Nemathehninthes, 155, 216, 222 

 Nematoda, 217, 222, 

 Nematode worms, parasitism in gen- 

 eral, 219 



adaptability to changed environ- 

 ment, 221 



factors influencing injury to host, 

 220 



host limitations, 220 



infection, 219, 220 



treatment in general, 221 

 Nematodirus filicollis, 273 

 Neosporidia, 336, 350 ■ 

 Net tick, 143 

 Nodular disease, 281 



Nodular strongylosis of cattle, 285 



of the goat, 281 



of the hog, 287 

 Nodular strongylosis of the sheep, 281 



development, 283 



importance, 284 



occurrence, 283 



post-mortem appearance, 284 



symptoms, 284 



treatment, 285 

 Notoedres, 101, 117 



var. cati, 117, 118 



var. cuniculi, 118 



parasitism of, 103 

 Notoedric mange, treatment of, 120, 

 123, 124 



O 



Obligate parasites, 8 



Ocular filariasis of the horse, 245 



of the ox, 248 

 (Esophagostomese, 280 

 (Esophagostomiasis of cattle, 285 



of the goat, 281 



of the hog, 287 



of the sheep, 281 

 (Esophagostomum, 255, 280 



columbianum, 281 



dentatum, 287 



inflatum, 285 



radiatum, 285 



subulatum, 287 



venulosum, 282 

 (Estridffi, 21, 53 

 (Estrus ovis, 62 

 Optional parasites, 8 

 Organic multiplication, influences re- 

 stricting, 1 

 Ornithobius bucephalus, 86 

 Ornithodorus megnini, 140 

 Omithonomus cygni, 86 

 Ostertagia marshalli, 269 



ostertagi, 272 



