The third technical meeting of the International Union for the Protection of Nature was held in Salzburg from 15th to 20th September, the last two days being occupied by excursions in which the majority of delegates took part. The term delegates is used though it is not strictly correct, for participants attended the conference as individuals only. Twelve countries were represented: Austria, Belgium, Denmark, Finland, France, Germany, Great Britain, Greece, Italy, the Netherlands, Switzerland and Yugoslavia. Unfortunately there was nobody from the United States, a great supporter of the Union, but papers and information from America helped to fill this gap.