\ 



C 124. ] 



It may be obferved that Agates do not form a 

 diftinft fpecies of ftone, but confift of quartz, 

 cryftal, hornftone, flint, calcedony, amethyft, jaf- 

 per, cornelian, heliotropium, jade, Sec. in various 

 combinations, and may be exhibited in the fol- 

 lowing manner, from Kirivan. 



The clear pellucid white de- 



notes 

 The yellowifh white 

 The greyifh white 

 The milk white 

 The yellowifh grey 

 The fmoke grey 

 The pearl grey 

 The greenifh grey 

 The bluifh grey 

 The honey yellow 

 The yellow 

 The ochre yellow 

 The orange yellow 

 The yellowifh brown 

 The reddifh brown 

 The flefh red 

 The blood red 

 The brick red 

 The violet blue 

 The brownifh green - 

 The leek green, and feeling 



fomewhat greafy 



cryftal or quartz, 

 amethyft, calcedony; 

 quartz ; 



jafp*er, amethyft; 

 quartz, flint; 

 calcedony, flint ; 

 calcedony ; 

 calcedony, jafper; 

 calcedony. 

 flint, jafper; 

 jafper; 

 calcedony ; 

 calcedony ; 

 cornelian ; 

 hornftone, cornelian » 

 cornelian ; 

 jafper, cornelian; 

 jafper. 

 amethyft ; 

 heliotropium ; 



jade. 



1 1. Feltspar, Adularia> dr Moonftone, cryftal- 

 lized in tetrahedral prifms, truncated obliquely, 



and 



