Abstract
A new device for continuously recording the dust‐content of the air has been used to obtain records of atmospheric dust at Stanford University, California. Continuous dust‐records from January 13 to March 17, 1934, have been taken and the variations in the dust‐content of the air correlated with other atmospheric phenomena recorded at this station. In particular, the space‐charge tended to vary inversely as the dust‐content, while the potential gradient seemed to be unaffected by changes in the amount of dust.