Published in Journal of the Elisha Mitchell Scientific Society, in 1922, in volume 37, pages 180-182

Created: 2017-10-18, modified: 2017-10-18

Published in Journal of the Elisha Mitchell Scientific Society, in 1922, in volume 38, issue 1, pages 98-126

Created: 2017-10-18, modified: 2017-10-18