282 Scientific Intelligence. 
ducting power. As in the former experiment oxygen appears at the 
-+ pole, but much more copiously; and at the —pole a shght escape of 
gas bubbles is perceptible, whilst the blue streaks present themselves in 
greater quantity, coloring the liquid contained in the negative arm of the 
t ‘he odor of sulpburous acid is also distinctly perceptible. With 
place, 
of the color produced, 
The development of sulphurous acid seems to be occasioned by the 
rise of temperature produced in the solution by the action of the current, 
Nor is it confined to the negative arm of the tube; circumstances whi 
indicate that it is a seconda odu 
82° F., the liberation of oxygen and hydrogen was of longer duration 
pre free sulphur appeared. The temperature of the electrolyte was 
oun 
it meets at the moment of separation, and form sulphuretted hydrogen. 
Nota trace of this gas has however been yet detected. F urthermore if 
i i at 
