SPECIFIC HEATS OF SOME COMPOUND GASKS. 
TABLE XXXIID. 
587 










| | i — 
p- | t. l. | 1 p- y= P de 2: 7. p. 
93 | 18:2 27°51 | 48°82 2°4.96 1019 1:137 4234, 
102 19°7 27°57 48°96 2501 1:020 1139 4172 
108 19°8 ZO 48597) 27502 1-020 1134 4°365 
104 18:3 2748 | 4884 2-502 1-021 1139 4-194 
86 9°05 20:10) 1} 48:03 2-492 1018 Wei337/ 4-212 
| | | 
Mean . Wemss7/ 40235 


§ 16. Silicon Tetrachloride (SiC\,). 
Silicon tetrachloride is much more unstable even than the two substances last 
described. 
silica are given off if the bottle containing the liquid is left open. 
'The Kunpr apparatus was easily dried, so there was probably no appreciable 
decomposition in the velocity of sound experiments, but the vapour-density apparatus 
was more difficult to keep from contact with moist air, and at the end of the set of 
experiments a slight dimming of the glass from the deposit of silica showed that the 
attempt to keep out moisture had not been entirely successful. 
TABLE XXXIV. 






p- t. p- | 
| = aa 
84 14. S797 
88 141 5810 
106 14-1 5848 
110 13°6 5875 
126 16 5879 
138 161 5878 
Iie, Wl. 

130 4o 150 
It decomposes so readily in the presence of moisture that white fumes of 
