of Several Minerals. \%\ 



17. Common opal, approaching to the precious opal, of a milk- 

 white tint, 2.079 



18. Common opal, milk-white, 2.091 



19. Wood opal, brown, from Hungary, 2.114 



20. Common opal, yellow, from Hungary, 2.119 



21. Semi-opal, with dendritic delineations, from Moravia, 2.207 



22. Opal-jasper, yellowish-brown, from Telkebanya in Hungary, 



the well-known ironshot variety, * 2.699 



23. Pitchstone, of a brownish-red colour, from Meissen, 2.212 



24. Pitchstone, dark leek-green, from Arran, » 2.340 



25. Pitchstone, of a brownish olive-green, from Zwickau in Sax- 

 ony ; the variety often containing anthrazite, 2.354 



26. Axinite, crystals from Cornwall, 3.271 

 2.7. Chrysolite, a single crystal, 3.441 



28. Chondrodite, from Ersby, in the parish of Pargas, Finland, 3.199 



29. Boracite, a single crystal, 2.973 



30. Tourmaline, a fragment of a crystal, nearly black, 3.069 



31. Idocrase, of a yellowish- white colour, from Fassa in the Tyrol, 3.287 



32. Idocrase, fragment of a crystal of the variety called Egerane, 3.399 



33. Helvine, a very small quantity of fragments of crystals, 3.100 



34. Garnet, of a liver brown colour, (occurring along with wax- 

 yellow pyroxene of a sp. gr. of 3.278,) from Schwarzenberg in Sax- 

 ony, 3.402 



35. Garnet, white, hardness = 7.5, from the valley of Zem in 

 Salzburg, 3.594 



36. Grossular, a single crystal, 3.615 



37. Garnet, red, hardness == 7.5, occurring along with the green 

 varieties of granular amphibole, and pyroxene in the Bacher moun- 

 tain in Stiria, 3.648 



38. Melanite, a single crystal, 3.701 



39. Garnet, red, hardness = 7.5, from the Saualpe in Carinthia, 

 where it is associated with the omphacite of Werner, 3.723 



40. Garnet, oil-green, hardness = 6.5, 3 J 62 



41. Garnet, of a brown colour, hardness = 6.5, 3.769 



42. Pyrope, large grains, 3.788 



43. Garnet, red crystals, from the Tyrol, 4.098 



44. Garnet, red translucent grains from Ohlapian in Transylvania, 4.125 



45. Almandine, several crystals, 4.179 



46. Garnet, nearly blood-red, the variety which is found with 



the chrysoberyl of Haddam, 4.208 



47. Staurotide, crystals from St Gothard, 3.725 



48. Zircon, small flesh-red crystals, from the Saualpe in Carin- 

 thia, 4.505 



Order VIII. Ore. 



1. Sphene, of a yellow colour, massive, from Arendal, 3.168 



2. Anatase, a number of small crystals, 3.826 



