Immediately following the last scientific paper presented and the discussions thereon, there was a formal closing. This consisted of three parts: 1. B.S. Neporent presented statistics on the number, scientific qualifications and geographical distribution of the delegates; 2. H.A. Klasens read the report of the continuing International Committee, emphasizing the plans and recommendations for the ... [Show full abstract] next conference; and 3. F. Williams made very brief observations on the Conference highlights and then thanked the different groups responsible for the success of the Conference.