Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. House-Flies and How They Spread Disease by C. G. Hewitt was first published in 1912. The book contains an account of the natural history of houseflies and their role in spreading disease, together with information on control and prevention.