Abstract
The electric potential of the moorings of captive balloon and the electric current flowing from the moorings to the earth was observed at maebasi, Gumma Prefecture, on July and A g st, 1944. The atmospheric potential gradient and the density of space charge in the lower stratum was calculated from the observational results and compared with the meteorological results. When there was a haze-layer, the electric charge of positive sign is found in the layer and the charge of negative sign in the upper and lower part of the layer.
