The paper analyses 12 months' observations of the intensity and apparent direction of arrival of atmospheric disturbances, carried out for the Radio Research Board at a station in S. E. England. Observations were made at 7 h., 13 h., and 16 h. daily, the average number of such disturbances heard being 80 per minute. The apparent direction of arrival is well marked, with unexpectedly simple diurnal and seasonal variations, following a general law of counter-clockwise swing in direction accompanying increase in solar altitude. The mean direction of greatest disturbance for the year is 153°, with a diurnal variation of 60° range, a seasonal of 100°. The numbers heard per unit-time have also comparatively simple diurnal and seasonal variations, March being the quietest, June the most disturbed month, with a disturbance twice that of March. Fourier coefficients for the monthly mean and modal values are tabulated. Close correlation between apparent direction of arrival and solar altitude is found, no local topographical effect is traced, and no quantitative relation with terrestrial magnetism, atmospheric electricity, or any of the surface meteorological elements (except temperature) has yet been established. Special observations during a solar eclipse are reported.