SyAiinG HOt CG ISi: 
Numter. 
Silica. 
Per cents of Ingredients. 
Alumina. 
ee bd 
= NO OO 
IM). 
eo ee BIO 
1.13 7.63 40.73 
0.64 9.12 34.89 
USSG) ee 47.00 
LCoS ape ree 49.78 
ORS OR i setae 44.64 
Le ciel aes 48 .63 
ORS Ee I bere 40.46 
0.70 0.34 | 49 17 
0.43 0.34 | 48.05 
0.24 2.61 39.76 
0.48 0.60 | 44.75 
0.82 MoO | Bol 
0.60 2.43 42.30 
0.84 Ih seo 39.83 
1.28 0.50 39.17 
1.44 0.50 46.66 
0.99 2.27 40.27 
0.70 1.65 44.29 
OP GARE Rare ete es 43.79 
ORG OME aes 39.94 
UMP NY Ula e te ens 48.14 
w |Magnesium 
fa 
— 
+ et 
Oxide. 
L_- OS © 
Mm GS DP gs mS @y 7S 69 PS PS he PS eo oy 
28 
Caleium 
Sulphate. 
ec ee o 
ee ee 
ee ee oe 
Caleium 
Sulphide. 
— 
