388 Report on Meteorites. 
It is scarcely to be doubted but that fiuorine will soon be de- 
. tected in meteoric stones, inasmuch as it is a frequent constituent 
both of mica and of apatite; the former of which minerals, in 
very minute quantity, has been detected in the Weston stone, 
while the existence of apatite has been rendered highly proba- 
ble, if not certain, in the Richmond meteorite. It is easy to con- i 
ceive that several other terrestrial elements belong to the meteors, 
which from their volatility, may have been dissipated and lost in 
our atmosphere, before the masses to which they oniginnly ad- 
hered could have reached the ground. 
- ‘The manner in which the meteoric einiticrine are nesocianed’ is 
readily seen, by throwing the mineral species se wivel rise to, 
into four groups or orders. 
OrpER First. 
1. Iron (Fe, Native Iron), and Iron-alloys (Fe*Ni, Nickel- 
aferous Iron). 
2. Sulphur (S, Sulphur), and sulphurets (Fe*S’, Muagnete 
Iron Pyrites: Cr?'S*' Schreibersite). 
3. Carbon (C, Plumbago), and Carburets (Fe*C, Native Steel : ” 
Fe’Ni*C. Nickeliferous Steel). 
4. Phosphuret (Fe Ni Mg* P, Dyslytite). 
25, Silicet (Fe'Si ———_). 
Orpver Seconp. > 
1. Oxides (Fe?02+HO, Limonite: Fe*O*, Magnetic Iron ; 
Cr?0°, Chrome-ore). 
2. Chlorides . Cl: Ni Cl: Ca Cl: Mg Cl: Na Cl). 
Orper 'T'arrp. 
1, Oxygen acids (SiO*, Soluble Silica: SO?, Sulphurous 
acid). 7 | 
Orver Fourru. 
® 
1. Sulphates (Mg0+S0?: NaO+SO:: NiO480°: FeO+ 
SO; 
2. Hyposulphites (Na0+S8*0? : Mg0-4$?02). 
3. Silicates (Mg0+3Si0° Chladnite: Silicates of magnesia, 
protox. iron, lime, alumina, soda and potassa, Peridot, Pyro? 
ene, Anerihaie, Chantonnite, and Garnet). , 
24. Titaniate (—— Sphenomite). 
#5. Crees (deat #) 
