and Ctysiallt?ie Condition of Bodies. 257 



CrtOj 5-21 Wdhler 1003'6 192'63 



K -r J 3 ^ 4-75 \k' ,^-r. ^ f •^^"' ^" 1 198-51 



U-78 ;Wffer J [jg^.gg 



Spinel, Gahnite, Chrome-iron ore, FranJclitiite and Magnetic' 

 iron- ore. 



MgO,AU03{^;^^,) Breithaupt 90068 {g8;82 



* Qlo.'thO^^^'^^^ ^"''^ 1^^3'^ ~<5313 



i /MgO, Al,03\ f4-410\,,. , „ f265-71 



-' VFe O, C.V O3 J 1 4-4.39y^'"^'' ^^' ^^ 1 263 97 



^ (MaO.FSoa)^'^^^ Mohs 14530 285-41 



FeO, FejOs 5-094 Mohs 1417-6 278-28 



Copper-glaiice and Silver -copper-glance, 



C..^[tfi] Mohs 992-56 {^^^ 



(Cii + Ag) S 6-255 Sti-omeyer 1272-7 203-47 



The atomic weight of silver is supposed to be half that 

 adopted by Berzelius. 



Antimony-glaiice and Orpiment. 



(-4-620 Mohs 1 f 479-75 



Sb., S3 <^ 4-626 Breithaiipt \ 2216-4 ^479-11 



L 4-850 Musschenbroek J L 45699 



r 3-313 Musschenbroek T [465-91 



Aso S3 i 3-480 Mohs \ 1543 6 \ 443-55 



L 3-459 Karsten J [ 446-24 



Cobalt-glance and Nickcl-gUmce. 

 Co So+Co Ao., 6-298 Mohs 2080-4 330-32 



Ni S,+Ni As, { 6;|3S^Breithaupt 2081-8 { g3;72 



Arsenic- a7id AntimoJii/-rnby-blende. 



r5-531\ n . . ^ 1 r 1121 3 



Ag3S3+As,S3J 5-592; '^'•^"'^•''"P' I G201-9 J 1109-1 



[5-524 Mohs J 1.1122-7 



Ag^S. + Sb^S^isSO'^'''^'''^""'^' 1 6874-7 \\m^4 

 [5-831 Mohs J [11790 



Tennantite and black Copper. 



Cn S Ac <N "» 

 +2(Cu';S3aI,S3}'»-375 Phillips 135637 3100-3 



+ 2(Pbast'.Sb!'s3}^"-^^^ ^"'^s 18600-9 32276 



Phil, Mag, S. 3. Vol. 18. No. 117. April 1811. S 



