Published in Philipp. J. Sci, in 1910, in volume 4, pages 491-543

Published in Philippine Journal of Science. Manila, in 1910, in volume 5, pages 33-55

Published in Philippine Journal of Science D General Biology Ethnol Anthrop, in 1910, in volume 5, pages 161-181

Published in Philippine Journal of Science D General Biology Ethnol Anthrop, in 1910, in volume 5, pages 211-217

Published in Philippine Journal of Science, in 1910, in volume 5, issue 2, pages 115-118