216 



cox. 



Table II. 



[The numbers give parts of the material by weight.] 





Total. 



Individual constituents. 



Silica 

 (SiOo). 



Alu- 

 mina 

 (A1.0;,) 



Iron 

 oxide* 

 (FeoOj) 



Cal- Mag- 

 cium nesium 

 oxide oxide 

 (CaO). (MgO). 



1 



1 



Volatile 



(CO.. 



H2O. 



etc.). 





234 



100 



2.27 

 42.72 



1.31 



17.23 



0.87 

 6.69 



126.03 0.44 

 11.12 ' 3 65 



101.74 



17 d3 



Shale No. 1 



Unburned 





334 

 119.2 



44.99 



18.54 



7.56 



137.15 



4.09 



119.17 



Volatile 





214.8 



20.95 



8.63 



3.52 



63.85. 



1.90 









■* Estimating all of the iron as ferric oxide. 



The limestone and .shale number 2 calculated after the same method 

 give the following results : 



Table III. 





Total. 



Individual constituents. 



Silica 

 (SiOo). 



Alu- 

 mina 

 (AI.O3) 



(^^•=°»'i(CaO). 



Mag- 

 nesium 



oxide 

 (MgO). 



1 



Volatile 



(CO., 



H..0', 



etc.). 





174 

 100 



1.69 



0.97 



0.64 93.72 

 6.00 1 17.44 



0.33 

 2.84 



75.65 

 22.81 



Shale No. 2 



Unburned 



35.02 1 13.21 



274 

 98.5 



36.71 



14.18 



1 

 6.64 i 111.16 



3.17 98.46 



Volatile 







Burned 



176. 5 



20. 8 ! S. OS 



3.76 : 62.98 



1.80 











1 



'^ Estimating all of the iron as ferric oxide. 



The limestone and shale number 3 combined according to a similar 

 calculation give the following results : 



Table IV. 





Total. 



Individual constituents. 



Silica 

 (SiOo). 



1 



Alu- ! Iron 



mina ' oxide* 



(Al2 0s)(Fe,03) 



Cal- 

 cium 

 oxide 

 (CaO). 



Mag- j Volatile 

 nesium ! (CO., 



oxide ■ HoO". 

 (MgO). etc.). 





171 

 100 



1.66 

 34.80 



0.96 

 11.70 



0.63 

 6.54 



92.10 

 17.19 



0.32 

 2.84 



74.35 

 22.09 



Shale No. 3 



Unburned 



271 

 96.4 



36.46 



12.66 



7.17 



109.29 



3.16 



96.44 



Volatile 



1 



Burned 



174.6 



20.9 



7.25 i 4.11 



62.60 



1.81 













» Estimating all of the iron as ferric oxide. 



