514 
HON. E. J. STEUTT ON THE CONDUCTIVITY 
The first experiments were made on hydrogen. These will he given in full as 
specimens. In the other cases only the results of each determination will be given. 
Diagram No. 1.—Eadium. Penetrating Eadiation. 
Hydrogen.—UhrQQ entirely separate determinations were made, with different 
samples of gas. 
(1.) Air. Pressure 144 millims. 
30 scale divisions of electrometer passed over in— 
55’5 57 55 57 57 59 55 5 seconds. 
Mean 56’4 seconds. 
Hydrogen pressure 727 millims. 
30 scale divisions in— 
73-5 71-5 73-0 73-5 71-0. 
Mean 72'5 seconds. 
n ** PIT 564:X r < / ‘ 
Conductivity oi hydrogen = x7^^‘5 ~ 
= !)• 
