CONTENTS 



XI 



PART IV 



OTHER SPECIES OF FLIES FREQUENTING HOUSES 



CHAPTER PAGE 



XV. The Lksser House-fly, Faxxia caxicularis L. and the 



Latrine Fly, F. scalaris Fab 186 



XVI. The Stable Fly, Stomoxvs calcitraxs L. . . . 197 



XVII. The Blow Flies, Calliphora krythrocephala Meig. and 



C. VOMITORIA L., and THE ShEEP MaGGOT OR 



"Green Bottle" Fly, Lucilia caesar L. . . 202 

 XVIII. The Cluster Fly, Pollexia rvdis Fab. and I/uscina 



STABULAXS FaLL 206 



XIX. Allied Muscid Flies and Miscellaneous Flies found 



in Houses 211 



M. domestica sub. sp. determinata Walker, 211. 

 Musca enteniata Bigot, 212. Musca vetustissima Walk., 

 212. Root Maggot Fly, Anthomyia radicum Meigen, 213. 

 Moth Flies, Psychoda spp., 216. 



PART V 



THE RELATION OF HOUSE-FLIES TO DISEASE 



XX. The Dissemination of Pathogenic organisms by Flies 218 

 Introductory, 218. Historical, 220. Methods by 

 which Bacteria are spread by Flies, 221. Infection from 

 Flies bred in infected material, 224. 



XXI. The Carriage of Typhoid Fever by Flies . . . 229 



Epidemiological and circumstantial evidence, 232. 

 Bacteriological evidence, 244. 



XXII. The Relation of Flies to Summer Diarrhoea of Infants 252 



XXIII. The Dissemination of Other Diseases by Flies . . 266 



Anthrax, 266. Tuberculosis, 269. Cholera, 272. 

 Ophthalmia, 275. Plague, 278. Small-pox, 279. Dii)h- 

 theria, 279. Yaws (Framboesia), 280. Leprosy, 282. 

 Dysentery, 284. Oriental Sore, 285. Syphilis, 287. 



