Published in Proceedings of the California Academy of Sciences, in 1919, in volume 2, pages 189-258

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 2, pages 259-297

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 2, pages 299-308

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 2, pages 309-310

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 2, pages 311-346

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 8, pages 317-351

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 1-36

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 37-67

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 69-121

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 123-173

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 175-196

Published in Proceedings of the Calaifornia Academy of Sciences, in 1919, in volume 9, pages 197-220

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 221-255

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 257-270

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 271-272

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 273-296

Published in Proc. Calif. Acad. Sci, in 1919, in volume 9, pages 297-312

Published in Proceedings of the California Academy of Sciences, in 1919, in volume 9, pages 313-329