12 
AMERICAN NATURAL HISTORY. 
Boston Journal of Natural History— Continued. 
Article 
30. Polythalamia in sand from the Sahara Desert, by John Bacon, jun. M.D. 402 
31. Chemical and Mineralogical Fragments, by C. T; Jackson, M.D. . 405 
32. On the Habits of Salmo Fontinalis, from a letter addressed to Dr. Storer, by J. B. 
Forsyth, M.D. ...... 412 
33. Description of Pyranga roseo-gularis (rose-throated Tanager), by Samuel Cabot, 
jun., M.D. . . . "/•' ’ . . . 415 
Yol. Y. Part 4. December, 1847- 
34. Notice of the External Characters and Habits of Troglodytes Gorilla, a New Species 
of 0rang from the Gaboon River, by Thomas S. Savage, M.D., Corresponding- 
Member, Boston Society Natural History. Osteology of the same, by Jeffries Wy¬ 
man, M.D., Hersey Professor of Anatomy in Harvard University. . 417 
35. Descriptions and Figures of the Araneides of the United States, by Nicholas Mar- 
cellus Hentz, Tuscaloosa, Alabama (continued from page 370) . . 4,43 
36. Dissection of Scymnus brevipenna, Lesueur, by S. Kneeland, jun., M.D. . 479 
37. Description and Analysis of three Minerals from Lake Superior, by J. D. 
Whitney ....... 486 
38. The Dodo (Didus ineptus), a Rasorial and not a Rapacious Bird, by Samuel 
Cabot, M.D. ....... 490 
Yol. VI. Part 1. October, 1848. 
1. On the Embryology of Nemertes, with an Appendix on the Embryonic Deve¬ 
lopment of Polynse ; and Remarks upon the Embryology of Marine Worms in 
general, by E. Desor, Boston . . . . . 1 
2. Descriptions and Figures of the Araneides of the United States, by Nicholas Mar- 
cellus Hentz, Tuscaloosa, Alabama . . . .18 
3. Chemical Examination of some American Minerals, by J. D. Whitney, 
Boston . . . . . . . . 36 
; 4. Examination of three New Mineralogical Species proposed by Professor C. U. 
Shepard, by J. D., Whitney . . . . .42 
5. Observations on some of the Habits of Salmo Fontinalis, by Samuel S. Bigelow, 
M. D., Worcester ...... 49 
6. Description of a New Genus of Fishes (Malacosteus), by W. O. Ayres, Boston 53 
7. On the Pselaphidae of the United, States, by John L. Le Conte, M.D.,. New 
York . . . . . . . .64 
8. Dissection of Crocodilus Lucius, by Samuel Kneeland, jun., M.D., Boston . 110 
9. Chemical Examination of Algerite, a New Mi nera l Species, by T. S. Hunt, of the 
Geological Commission of Canada, including a Description of the Mineral, by F. 
Alger, Boston . . . . . . .118 
10. Examination of a Mineral from Cherokee County, Georgia, by Francis Algpr, 
Boston . . , . . . . 123 
H. On the Cancellated Structure of some of the Bones of the Human Body, by 
Jeffries Wyman, M.D., Cambridge . . . . . 125 
Vol. YI. Part 2. January, 1850. 
12. Planta Lindheimerianse, Part II. An account of a Collection of Plants made by 
F. Lindheimer, in the west part of Texas, in the years, 1845, 1846, and 1847, 1848, 
with Critical Remarks, Descriptions of New Species &c., by Asa Gray, M.D. 142 
13. Description of a New Species of Polypterus from West Africa, by W. O. Ayres, 
Boston, Massachusetts . . . . . . 241 
14. Observations on the Fishes of Nova Scotia and Labrador, with Descriptions of New 
Species, by Horatio. Robinson Storer . . . . 277 
Yol. YI. Part 3. April, 1852. 
15. A few Ornithological Facts gathered in a hasty trip through portions of New Bruns¬ 
wick and Nova Scotia, in June* 1850, by T. M. Brewer, M.D. . 297 
16. Notice of the Egg of Thalassidroma Leachii, with Descriptions of the Eggs of 
Procellaria' Bulwerii, Precellaria obscura, and Puffinus Major. Read before the 
Boston Society of Natural History, by T. M. Brewer,M.D. . . 308 
17. Description of five New Species of Birds; and other Ornithological Notes of Cuban 
Species. Read before the Boston Society of Natural History; March 3, 1852, by 
John Gundlach . . " ... 313 
18. The Organic Relations of some of the Infusoria, including Investigations con¬ 
cerning the Structure and Nature of the Genus Bodo (Ehr.). Read before the Bos¬ 
ton Society of Natural History, November 5, 1851, by W. J. Burnett, M.D. 319 
19. Notes and Observations on the Analysis and Character of the Soils of the Scioto 
Valley, Ohio, with some general Considerations respecting the subject- of Soil 
