By H. J. Bensted, W. Bulloch, L. Dudgeon, A. G. Gardner, E. D. W. Greig, D. Harvey, W. F. Harvey, T. J. Mackie, R. A. O'Brien, H. M. Perry, H. Scutze, P. Bruce White, W. J. Wilson. London, 1929. His Majesty's Stationery Office. Pp. 1–482
by A. Trevor Willis, M.D., B.S. (Melb.), Ph.D. (Leeds), M.C.Path., M.C.P.A., Reader in Microbiology, Monash University, formerly Lecturer in Bacteriology, University of Leeds. xiv + 234 pages, illustrated, second edition. Butterworth Inc., Washington. 1965. $8.50
1.A study was made of the concentration of virus which was necessary to infect certain species of Aedes mosquitoes with yellow fever.
2.The lowest titer at which transmission by bite occurred was 10-3.0.
3.Half or more than half of the mosquitoes, which fed on primates circulating yellow fever virus at titers of 10-5.0 or above, became infected after extrinsic incubation periods of at least 28 days at 28°C.
Members Field Staff, International Health Division, Rockefeller Foundation, 49 West 49th St., New York 20, N. Y.