110 Scientific Intelligence. 
K,0+2HCI=H,0+2KCl. The residue must therefore have the 
formula, 
Pt'—sS 
| 
Et = iy 
| 
Sats Ss 
| 
Pri ae } 
The action of tence eee ie new compound may then be 
expressed by the equation 
Ptii—s Pt 
busts, | Pti—_s 
| 
kK, 6+sH=4H, S+K, 6 
Sn’ 8. Sn § 
bus Pt 
Hence the residue consists of metallic platinum mixed with a 
simple oxy-sulpho salt in which tin and platinum are now diatomic. 
The action of chlorhydric acid on the oxy-sulpho salt may be 
represented by the equation: 
ss 
Ks 6-4 .HCI=H, 0 +2K Cl ms a 
ee: Snu—S : 
The ~~ term when heated in hydrogen then gives hydrie sulphid 
mixture of tin and platinum. The corresponding sodium . 
salt nak ears obtained in the same manner and closely anemie the 
Pi 
ee. sab aes a —Pogg. Ann., CXxxvi, p. 105. w. 
;2 tributions to a know edg é of inhi bodies in inor- 
ganic Chemist istry.— Under this title Brows’ as communica 
ted a number of interesting notices fe Bt oy termed atomi¢ 
is ge aga Platino-cyanid of potassium ane: up two atoms 
10 with great facility, forming an iodo platinocyanid, 
K Cy, Pt+I,=K,Cy,Ptl,, which crystallizes in large brilliant 
brown crystals. Chlorine and bromine displace the iodine, forming 
a corresponding chlorid and bromid, the former being the salt de- 
scribed by Knop. The corresponding salts of other positive metals 
are easily obtained. Ao dine in pee manner unites tly with 
Sir romine 
exist. Double nitrite of platinous oxyd and platinum, K, 
(N@.,),, also takes up chlorine and bromine readily, forming yel- 
low “Grune salts | which the Rothok age Du as follows : 
€. * 
nitrous series and gives it the formula ge Au =NO—0),Pt This 
) unites with chlorine and bro ans Sens: very beetle 
