169. Sulphate of lime. Nova Scotia.

170. Compact limestone. Herculaneum, Mo.

171. Limestone. St. Louis, Mo.

172. Fibrous quartz. Schuyler's mines, N. J.

173. Quartz. Dutchess county, &c., N. Y.

174. Sulphuret of zinc, in crystallized quartz. Ulster county, N. Y.

175. Brown haemat.i.te. Salisbury, Conn.

176. Greenstone porphyry. Madison county, Mo.

177. Galena. Missouri.

Sh.e.l.lS.

1. Murex[*] ca.n.a.liculatus, with Voluta mercatoria[*] included.

2. Murex[*] ca.n.a.liculatus, with Voluta oliva[*] included.

3. Murex[*] ca.n.a.liculatus, with serpulae attached and included.

4. Murex[*] carica, with two pairs Mya[*] arenaria.

5. Helix[*] ampullacea, with two small madrepores.[*]

6. Helix[*] ampullacea, with seven Cypraea[*] monita--African money.

7. Venus[*] mercenaria, with four small ones; a variety of species included.

8. Venus[*] mercenaria, two valves, intermediate between the last named.

9. Cardium[*] leucostomum.

10. Cardium[*] edule.

11. Buccinum[*] perdix, three sh.e.l.ls.

12. Murex[*] peritoideus, two sh.e.l.ls.

13. Venus[*] maculata.

14. Patella[*] fornicata, six sh.e.l.ls.

15. Buccinum[*] testiculus, two sh.e.l.ls.

16. Venus[*] Paphia, two valves.

17. Larva[*] of strombus gigas, six sh.e.l.ls.

18. Buccinum[+] glabratum (Eb.u.ma of Lamarck).

19 and 20. Cypraea[+] lirabica.

21. C. sordida,[*] Linn. C. carneola, Lam.

22. C. caput[*] serpentis. Viper's head; cowry.

23. C. exanthema.[*] (False argus.)

24. Buccinum[*] patulum.

25. Voluta prunum.[*]

26. Cypraea[*] lota, two sh.e.l.ls.

27. Voluta guttrata.[+]

28. Bulla[*] gibbosa, seven sh.e.l.ls.

29. Ostrea[*] edulis.

30. Peetsen.[*]

31. Venus[*] tigerina.

32. Tellina[*] radiata.

33. Dentralium.[*]

34. Nerita[*] mammilla.

35. Bulla[*] ampulla.

36. Voluta oryzy.[*] (Rice sh.e.l.ls.)

37. Voluta[*] nivea.

38. Arca[*] glycymeris.

39. Cerea[*] noe.

40. Mytilus[*] modiolus.

[* Occidental sh.e.l.ls.]