Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 237-243

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 249-250

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 253-254

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 255-257

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 258-263

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 265-266

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 270-271

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 287-288

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 289

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 290

Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 298-304

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 312-313

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 316-317

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 318-319

Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1843, in volume 1, pages 320-322