Silicon (cryst.), 
Silicon (fused), 
0°4053 
Boron (amorphous), 4 0°3483 
| 0°3598 ‘ax t 
- Boron (graphitvid), 0°2352 
| 14 4. 2622 ie Re 
ZS Boron (cryst.), 0°2253 34°1 136 
. , 0°2574 
; rom the above table it will be remarked that all the elements exam- 
a ined obey the law of Dulong except lithium and sili egnault re- 
| : boron is doubtless somewhat too low, and the different experiments do 
Not agree well with each other—Ann. de Chimie et de Physique, Ixiii, 1. 
Ww. G 
Curwisrry, 
_ 4 On the Cyanid of Sulphur.— LisxEMANN has succeeded in prepar- 
mg a cyanid of sulphur by the action of iodid of silver upon sulpho- 
‘yanid of silver, iodid of silver and cyanid of epee being the only 
Products of the reaction, The cyanid of sulphur, et Cy, or S,Cy,., 
Presents colorless rhombic tables, or Jong thin leaves which have an odor 
@nalogous to that of iodid of eyanogen, and evaporate slowly but com- 
Ae i i and 40° it sublimes and condenses in 
cooli +3 a4 stalline mass. a 
ing solidifies to a white cry: The cyanid is soluble in 
solution with water. Nitric and chlorhy- 
mpose it easily in the cold. Potassium attacks > rath 
potassium, the reaction being rep 
O.=? } O42 } S.. 
of sulphydric acid, sulphid of potassium and nascent hy- 
