Result of the Forecast of Cholera, Smallpox and Plague in India in 1932 and Forecast for 1933 *Received by air mail, 1st December, 1932.

By Sir LEONARD ROGERS, k.c.s.i., m.d., f.r.c.p., f.r.s. MAJOR-GENERAL, I.M.S. (retd.) i'HE analysis of the results of my forecast of the incidence of cholera, smallpox and plague in 1932, recorded below, shows it to have been the most accurate of the three yet issued, in spite of the well-distributed rains of 1931 having made a forecast difficult. As the two previous forecasts also proved more correct than I had dared to hope, it now appears to be evident that my three years' very laborious studies of the incidence of these epidemic diseases in relation to the climatic conditions in India during the last sixty years have provided data from which moderately-accurate and practically-useful forecasts can be made several months ahead of the incidence of these three diseases. These forecasts are necessarily delayed and are less complete and up-to-date than they would be if they were worked out in India, instead of in London after the data have been received from India.