Abstract :
Note: Under this heading brief announcements (not more than fifty words in length) of vacancies, and men available, will be published without charge to members. Copy should be prepared by the member concerned and should reach the Secretary´s office prior to the 20th of the month. Announcements will not be repeated except upon request received after an interval of three months: during this period names and records will remain in the office reference files. All replies should be addressed to the number indicated in each case, and mailed to Institute headquarters.