The scientific research society, Sigma Xi, is an honorary organization whose purpose is to encourage original investigations in pure and applied sciences. / During the 1940's, a group of faculty members at South Dakota State University established what was called the Natural Science Research Club. Members met once a month to hear one of the group reports on his or her research findings. It was felt that this would expand the awareness of the faculty to research in progress on this campus, provide a broadened overview and discussion of various research projects, and encourage the faculty in their research effort by providing a show of interest in their work. / The Natural Science Research Club was a very active organization. After a few years, its members decided that they should establish themselves as a Sigma Xi Club, which would continue as it was already operating but, in addition, would have the advantages of formal outside contacts through the national Society. This was accomplished during 1952-53. / The number of Sigma Xi members increased significantly as the result of the influx of new personnel who had been granted membership at other institutions. By 1959, it was felt that the club was ready for chapter status. In 1960, a petition for chapter status was presented to the national office of the Society. Chapter status was granted in May of 1961.