C "8 ] 



friction, but one of it's poles is attractive whilft 

 the other is repulfive. Anal. Silex 61. Ar- 

 gil! 29. Calx 2. Iron -. Seven parts loft. 



Herman, 



f Ruhy y of a crimfon, deep red colour, which it 

 retains in the fire ; cryftallized in o&ohedrons and 

 their varieties, and double four-fided, feldom fix- 

 fided pyramids. Anal. Silex 16. Argill j6* 

 Lime 1. Iron 3. Klaprotk. 



g. Emerald, Smaragdite, of a pure green colour, 

 which it lofes in the fire, as well as it's weight; 

 cryftallized in hexagonal prifms, either perfect or 

 truncated on the angles or edges, terminating in 

 truncated pyramids; the cryftals moftly fmooth 

 on the furface, (hining and tranfparent in vari- 

 ous degrees. The light green coloured oriental 

 emerald is reckoned the beft. Anal. Silex 24, 

 Argill 60. Lime 8. Iron 6. Klaprotlu The 

 Smaragdste has been analyfed by Vauquelin. The 

 Green and White Smaragdite of Corfica. Silex 

 5a. Aiumine it. Magnefia 6. Lime 13. 

 Oxyde of iron 5,5. Oxyde of copper t,t. Ox- 

 yde of Chrome 4. The green Smaragdite. Si- 

 lex 51. Alum in 13,5. Magnefia 5. Lime 14,5. 

 Oxyde of iron 8. Oxyde of copper 0,5. Oxyde 

 of Chrome 4. The Grey. Silex 50. Aiumine 

 7. Magnefia 8. Lime 17. Oxyde of iron 14,5. 



h. Aqua Marine, Aigue marine, cryftallized in 

 large, perfect, fix-fided prifms; colour of a pale 

 green Anal. Silex 64. Argill 24. Lime 8. Iron 



i > 5. Bindheim, 



i. Crysolite^ 



