Published in Proceedings of the American Academy of Arts and Sciences, in 1912, in volume 48, pages 153-223

Published in Proceedings of the American Academy of Arts and Sciences, in 1912, in volume 48, pages 227-306

Published in Proceedings of the American Academy of Arts and Sciences, in 1912, in volume 48, pages 363-386

Published in Proceedings of the American Academy of Arts and Sciences, in 1912, in volume 48, issue 4, pages 83-88