520 
Dr.  F.  Horton  on  the  Electrical 
Temperature 
Centigrade. 
Eesistance  in 
ohms. 
Conductivity  in 
mhos. 
225 
80,000,000 
4-27   xlO"9 
261 
20,000,000 
1-71    XKT8 
315 
2,550.000 
1-34  xlO"7 
342 
800,000 
427   xlO~7 
376 
259,000 
1-32   xlO-,j 
424 
49.000 
6-97   xlO-*3 
458 
22.000 
1-55   xlO~-3 
487 
15,300 
223   xlO-5 
515 
9.500 
3-59   xlO— 5 
535 
7.150 
477   xlO— J 
566 
4.700 
7-27  Xl0-5 
598 
3,400 
l-040xl0~4 
645 
2.050 
1 
T664  xlO-4 
The  above  values  of  the  conductivity  are  plotted   against 
the  corresponding  temperatures  in  diagram  VI. 
Diagram  VI.— Showing  increase  of  conductivity  of  Bismuth  Jrioxide 
with  temperature. 
18 
200°    _    300°      400' 
7  ~£*fP£/?A  TUf?C 
500  600 
C£//T/0£AD£. 
