(Continuation from Vol 4, No 3)

Unlike the nitrogen most sulfur determina-tions in rainwater have been carried out comparatively recently. The greater part of the investigations were carried out in the U.S.A. where an extensive survey of the con-tribution of atmospheric sulfur to the soil has been made for agricultural purposes. I. Methods and analysis The analytical procedure has mostly in-volved a precipitation of the sulfur compounds as BaSO,. If properly done this is a satisfac-procedure. A division between sulfate sul ur and other forms of sulfur has rarely been done. If other forms of inorganic sulfur resent in rainwater they are generall