On the Appearance of Ninhydrinpositive Substances in the Atmosphere

This report is part of a larger work (entered at the Austrian Academy of Sciences on 20th June, 1959) which appears here without significant alteration and translated into English; it deals with the investigation of atmospheric organic nitrogen compounds. On some days in the course of these investigations the appearance of ninhydrinpositive substances could be established an at least some of them could be identified with great probability as amino acids. Observations are made about the appearance of these substances in relation to meteorological factors, and about the sizes in which particles of these substances may appear. Some remarks are added about their possible origin and the influence their appearance may have on life.