Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 1-2
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 3-5
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 6-10
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 23
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 49
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 92-104
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 105
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 108-109
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 145-147
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 147-151
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 152
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 153-161
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 161-165
Published in Proc. Acad. Nat. Sci. Philadelphia, in 1864, in volume 16, pages 166-181
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 187-189
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 189-194
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 199-208
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 214-224
Published in Proc. Acad. Nat. Sci. Philadelphia, in 1864, in volume 16, pages 224-231
Published in Proceedings of the Academy of Natural Sciences, Philadelphia, in 1864, in volume 16, pages 231-233
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 265-275
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 275
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 276
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 286-288
Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1864, in volume 16, pages 288
Published in Proceedings of the Academy of Natural Sciences of Philadelphia, in 1864, in volume 1864, pages 181-183