276 



TABLES 323-324. 



SPECTRUM SERIES. 



TABLE 323. Limits of Some of the Series. 



TABLE 324. First Terms of Some of the Series. Vibration Number Differences of 

 Pairs A**, and Triplets A^i, A*>2. 



For the P(m) and the S (m) is given only the first or second term, since the term with index o may be omitted as 

 coinciding with the first term of the S(m) or P(m) respectively. Consequently the numbers always proceed from 

 greater to smaller wave-lengths. Which is the common line can always be recognized from the vibration numbers. 

 See figure on the preceding page. The vibration differences can be obtained from Table 323. 



SMITHSONIAN TABLES. 



