An? e° /2n\3 3 
bam ae — (la — bn (7) Lian Vee f,=0 
4 n° e /22\3 
bag moe — fan thin (Ge) Harp. 
From the first and the second equations follows : 
A n? e? An? 
ie (PT ES BEEN IS 
nt es ac) ea 
e? 4 n? 
2mk-+ — (8k — TS 26 
from which TZ and k may be calculated. 
a's and a'zg are constants which may be arbitrarily chosen. The 
quantities bz: and bee are not arbitrary, but are determined from the 
third and the fourth equations as follows: 
es oes Ea) 
ee 
TSS ST 
eral ED) + (mie) a] 
NEE AREN EE UIR ai ir 
4 n? 3 & 72 a6 
(72 — 1) +55(F) 
We shall represent this by: 
bn =PA+ Ihe bee = Ah t+Pho 
The quantity } depends therefore only on the accidental value of 
the amplitude of the eiectric force on the point where it happens 
to be, and not on the accidental value of the amplitude of the 
vibration of the molecule. 
ba + bes =(p? +0) (fi + f2) - 
The amplitude of 5, is therefore Vp? + q° times or 4a V* e? times 
