Published in Proceedings of the California Academy of Sciences, in 1877, in volume 7, pages 41-48

Published in Proceedings of The California Academy of Sciences, in 1877, in volume 7, pages 53-55

Published in Proceedings of the California Academy of Sciences, in 1877, in volume 7, pages 83-88

Published in Proceedings of the California Academy of Sciences, in 1877, in volume 1876, pages 28-36