The forty-sixth meeting of the Society was held on November 4-6, 1965 at the Hotel Muehlebach, Kansas City, Missouri. The scientific sessions were integrated with those of the Geological Society of America and other affiliated societies. A total of 41 scientific sessions were held. Of these two were devoted to mineralogy, five to petrology, one to organic geochemistry and three to inorganic geochemistry. In these sessions 114 papers were presented.