First published in 1914, this book examines how flies that do not suck blood can still transmit diseases from host to host.

1. Introduction; 2. The species of non-bloodsucking flies found in houses; 3. Life-history of the house-fly (M. domestica); 4. The internal anatomy of the house-fly; 5. The structure and function of the proboscis; 6. The functions of the crop and proventriculus; 7. Habits of adult flies; 8. Methods of observing flies in captivity; 9. The ways in which flies carry and distribute bacteria; 10. The bacteriology of city flies; 11. The survival in the adult fly of micro-organisms ingested by the larva; 12. Flies and specific diseases; 13. Typhoid or enteric fever and diseases caused by allied organisms; 14. Epidemic or summer diarrhoea; 15. Cholera; 16. Tuberculosis; 17. Anthrax; 18. Other bacterial diseases - diptheria, opthalmia, plague, staphylococcal infections; 19. Non-bacterial diseases - infantile paralysis, small pox, typical sore, trypanosomiasis, yaws; 20. On the part played by flies in the dispersal of the eggs of parasitic worms; 21. Infection by non-biting flies of wounds caused by biting flies; 22. Myiasis; 23. The diseases of flies; 24. The parasites of flies; 25. Enemies of flies; 26. Flies breeding in or frequenting human faeces; 27. Prevention and control of flies; 28. Summary and conclusions; Appendix; Bibliography; Authors' index; Subject index.