THE SMITHSONIAN INSTITUTION. 



Cakdogiie of geological specimens collected by Dr. D. D. Owen, and 

 deposited in the Smithsoniav Institution by the Commissioner of the 

 Land Oficc, December, 1851. 



1. Ameth3'stine quartz, Prince's Bay, Lake Superior. 



2. Lepidodendron, Muscatine quarries, Iowa. 



3. do. do. do. 



4. Pecopteris, do. do. 



5. Calc. tufa., St. Croix. 



6 and 7. Tutenmergel, near Amsterdam, Des Moines R., Iowa. 



8 and 9. Lithostrotion ananas, D'Orb., Iowa R., Dev. 



10 and 11. Tutenmergel, Keith's Rapids, Des Moines R., Iowa. 



12. Plaster stone, 5 miles below Lizard Fork, Des Moines. 



13. Cannel coal, Barcroft bank, near Marion, Missouri. 



14. Pakeotherium Proutii, 2 lower jaw. Bad Lands, Nebraska. 



15. Ripple marked sandstone, South shore. Lake Superior. 



16. do. do. do. 



17. Fossil turtle. Bad Lands, Nebraska. 



18. Shell beds of the limestone of the Iowa, Devonian. 



19. Calc. spar crystals. Falls St. Croix. 



20. Lingula bed, F. ], b. of report. Falls St. Croix. 



21. do. do. do. 



22. do. do. do. 



23. Marine Mill trilobite grit, 4th trilobite bed of report, St. Croix. 



24. Portion of large ammonite, Fox Hills, Nebraska. 



25. do. do. do. 



26. do. do. do. 



27. Third trilobite bed. Mountain Island, Upper Miss. 



28. do. do. do. 



29. do. near Mouth Miniskah, 



30. do. do. do. 



31. Cannel coal, on branch of Aux Vasse, Callaway Co., Missouri. 



32. Coralline beds of Iowa city, containing Alveolites, Celleporites of 



D'Orb., Calamapora polymorpha of Goldf., pi. 27, fig. 3. 



33. Do., containing Favosites cronigera, D'Orb. 



34. Do., containing both corals. PI. 27, fig. 3. 



35. Orthis umbraculum, opposite Iowa Point, Missouri R. 



36. Selenite trom the upper Carbs. limestone, Indian Creek, Iowa. 



37. Leptiena limestone, containing L. planumbona, 3 miles above 



Savannah, Wisconsin. 



38. Do., containing L. sericea. 

 39. 



40. Bituminous limestone, containing Asaphus (Isotelus) megistos of 

 Locke, Otter creek, Turkey R , Iowa. 



41. Part of scapula of Palaeotherium Proutii, Bad lands. 



42. Casts of Leptasna, undet. Falls St. Anthony, F. 3, a of report. 



43. Oolitic limestone, Lower Carbs. limestone, Burlington, Iowa. 



44. Retepora Archimedes, Keokuck Rapids. 



45. Encrinital hmestone from the Lower Carb. hmestonc of Bur- 

 lington, Iowa. 



46. Do., containing Pentremites melo. 



