Conductivity  of  Metallic 
Oxides. 
Temperature 
Centigrade. 
Resistance  in 
obms. 
Conductivity  in 
mhos. 
763 
70:000,000 
1-38   Xl0~9 
879 
9,125,000 
1-06  Xl0~8- 
930 
4,175,000 
2-33   Xl0~8 
1011 
2.000,000 
4-85  xl0~8 
1105 
6u0,000 
1-62  xlO~' 
1175 
245,500 
396  xlO~' 
1235 
104,100 
9-33  xlO-7 
1304 
35,100 
2-77  XlO-6 
1370 
2,045 
4-75  xlO~° 
1448 
122-7 
7-90  xlO"4 
1466 
910 
1-035  xlO-3 
511 
Diagram  I. — Showing  increase  of  conductivity  of  Lime 
with  temperature. 
800  900  1000"         1100° 
I300c 
1400 
1500 
The  relation  between  the  conductivity  and  the  temperature 
is  shown  graphically  in  diagram  I.  The  ordinates  give  the 
value  of  the  conductivity,  the  abscissae  being  temperatures 
in  degrees  centigrade.  In  the  first  curve,  starting  from  the 
left,  each  unit  of  the  ordinates  represents  10~8  mho ;  in  the 
