304 
REPORT—1899. 
MOoOLYBDENUM—continued. 
Wave-length 
Spark 
Spectrum 
Intensity 
and 
Character 
Reduction to 
Vacuum 
Rho RRR bb 
ROE ee ee Bie ee 
B 
Le ead aS PH a rate ay 
6B 
ap gel ne a a ae 
Oscillation 
Frequency 
in Vacuo 
300 
