UTAH ACADEMY OF SCIENCES 125 
a negative electron becomes charged positively. Con- 
sequently there is a tendency for these ions to recombine. 
Experiment has fairly well demonstrated that light is 
emitted when recombinations are being effected or when 
the negative electrons are settling beck to their inner- 
most orbits. 
While a mathematical analysis of a more complex 
atom has not been made we should feel elated over the 
progress up to date. The existence of a positive nucleus 
for all atoms appears proved beyond a reasonable doubt. 
It follows that the number of negative electrons revol- 
ving about the nucleus must equal the number of positive 
electrons in the nucleus if we are to have a neutrally 
charged atom. 
