a_ (Yaws). _Jour. of Hyg._, Vol. VII, 1907, pp. 558-599. On
pages 566-568 he discusses the part played by insects in
transmitting the disease. Gives detail of experiments conducted and
concludes that under certain conditions yaws may be conveyed by
flies and possibly other insects.

COBB, J.O. Is the Common House-fly a Factor in the Spread of
Tuberculosis? _Amer. Med._, 9, 1905, pp. 475-477. Believes that the
bacilli may enter the system through the digestive tract and that
flies carry them to our food.

DICKENSON, G.K. The House-fly and Its Connection with Disease
Dissemination. _Med. Record_, 71, 1907, pp. 134-139. Summary;
bibliography.

ESTEN, W.M., AND MASON, C.J. Sources of Bacteria in Milk. Starr's
_Agric. Ex. Stn., Conn. Bull._, 51, 1908. Shows how flies may carry
bacteria to milk. Table showing number of bacteria on flies from
various sources.

FELT, E.P. The Economic Status of the House-fly. _Jour. Eco.
Ento._, Vol. 2, No. 1, Feb., 1909, pp. 39-45. A summary of the
charges, possibilities, proofs, etc. Discussion.

GUDGER, E.W. Early Note on Flies as Transmitters of Disease.
_Science_, N.S. Vol. 31, Jan. 7, 1910, pp. 31-32.

HAMER, W.H. Nuisance from Flies. _London County Council Rept._ No.
1,138, pp. 1-10, and No. 1,207, pp. 1-6, 1908. Observations on
various flies and their relation to diseases.

HAYWARD, E.H. The Fly as a Carrier of Tuberculosis Infection. _N.Y.
Med. Jour._, 80, 1904, pp. 643-644. Tubercular bacilli pass through
the digestive tract of flies and remain virulent.

HOWARD, L.O. The Carriage of Disease by Flies. _Bull. 30_, N.S.,
pp. 39-45, _U.S. Dept. Agric, Div. of Ento._, 1901. Discussion of
flies as carriers of disease.

HOWARD, L.O. House-flies. _U.S. Dept. of Agric., Bureau of Ento._,
Cir. No. 71, revised ed., Sept. 21, 1906. Notes on the various
species visiting houses; habits; methods of control; regulations
for controlling flies in cities.

HUTCHINSON, WOODS. The Story of the Fly That Does Not Wipe Its
Feet. _Sat. Evening Post_, March 7, 1908.

JACKSON, DANIEL D. Conveyance of Disease by Flies Summarized.
_Bost. Med. & Surg. Jour._, 1908, p. 451. Disease and flies prevail
at same time; records over 1,000,000 bacteria to each fly caught on
swill-barrels.

JACKSON, DANIEL B. Po