Abstract
The three notable solar flares observed in the western hemisphere in 1936 did not produce magnetic storms. It is inferred from terrestrial effects accompanying them that intense ultraviolet emission occurred at the same time. Study of the effects suggests that, when a flare of ultraviolet light increases the conductivity of the lower regions of the atmosphere, increased diurnal-variation currents flow. The current-systems necessary to produce magnetic storms are of an entirely different type—hence the observed effects do not support the ultraviolet light theory of magnetic storms.