a preliminary report on clays oe Florida 
257 
FUSION POINTS OF SEGER CONES —Continued 
Cone 
No. 
Chemical Composition 
Tem 
tu 
°F 
p era- 
re 
°C 
Appearance of 
Heat 
25 
© p 
PO M 
oo 
j 6.6 AI 2 O 3 
66 
Si02 
2966 
1630 
26 1 
0.3 K2O 
0.7 CaO 
| 7.2 AI 2 O 3 
72 
Sl&2 
3002 
1650 
27 
O O 
Oft 
P5 to 
oc 
120 AI 2 O 3 
200 
S 1 O 2 
3038 
1670 
28 
AI 2 O 3 
10 
Si02 
3074 
1690 
29 
AI 2 O 3 
8 
Si02 
3110 
1710 
30 
AI 2 O 3 
6 
Si02 
3146 
1730 
31 
AI 2 O 3 
5 
Si02 
3182 
1750 
32 
AI 2 O 3 
4 
Si02 
3218 
1770 
. 33 
AI 2 O 3 
3 
Si02 
3254 
1790 
34 
AI 2 O 3 
2.5 
Si02 
3290 
1810 
35 
AbOs 
2 
Si02 1 
3326 
1830 
36 
AI 2 O 3 
2 
Si02 2 
3362 
1850 
37 
AI 2 O 3 
1.66 S 1 O 2 
3398 
1870 
38 
AI 2 O 3 
1.33 Si02 
3434 
1890 
39 
AI 2 O 3 
1 
Si02 
3470 
1910 
40 
AI 2 O 3 
0.66 Si02 
3506 
1930 
41 
AI 2 O 3 
0.33 Si02 
3542 
1950 
42 
A1203 
3578 
1970 
l Kaolin. 2 Clay Schist. 
