It is found
(1) That the angular distribution function of electrons scattered in mercury is not a monotonic function of the angle, but has a minimum whose angular position is an inverse cotangent function of the energy of the electrons.
(2) That the angular distribution function of electrons scattered in air is a monotonic function of the angle within the range investigated.
(3) That measurements of small angle scattering in mercury are in qualitative agreement with the work of other observers.
