1908 ] 
“Pinch Effects” in Electric Sparks 
147 
balloon to the much smaller basket beneath, and electrons sliding 
down these lines (along their negative direction, of course) would 
naturally arrange themselves in a column larger at the negative 
end, especially as these lines are themselves falling towards the 
center line of the discharge. In this case would not the phenom- 
enon simply show the pinch effect in gaseous discharge? 
University of North Carolina, 
Chapel Hill, N. C. 
