﻿682 Gesammtsitzung vom 29. October 1874. 



Journal of the Academy of natural sciences of Philadelphia. New series. 



Vol. VIII. Part. I. Philadelphia 1874. 4. 

 The american Journal of science and arts. III. Series. Vol. VIII. N. 44. 



45. Aug. & Sept. 1874. New Haven 1874. 8. 

 Proceedings of the Academy of natural sciences of Philadelphia. Part. I. 



II. III. 1873. Jan. — Dec. Philadelphia 1873/74. 8. 



