PROFESSOR KELLAND, ON MOLECULAR EQUILIBRIUM. 58 



(a 3 + P) (1 + aa + al . 1+aa-al A 



— Hi — : — ■" ; — ••") 



an expression which involves e~ aa as a factor, and which is conse- 

 quently of an entirely molecular nature. 



The ahove expression may be put into the following form : 



S = 5 [2le al 



a a L 



x , 2e al aV-3 , , , N 8(«-«'+e" J ) 1 , ; 



+ (l+a«).{- _ + __(*-'_<>««)-- -A* ^+-(«-' + ««0 



a 3 + Z 3 



AMP2Tre- aa i, , .. (a? + l 3 a? + 1 3 \\ 



+ &c. 



■ a . //r'o 3 — 3 



+ 



AMP2ire- aa „ ( , , , N /a 3 a 3 -3 , 1 « 3 + f 



a«" ' tv y V a / 3 a a/ 3 



AMP 2Tre- aa ^ ... , .. /« 3 a 3 a 3 a*J*\ ~», 



AMP2-n-e- aa „ , (e~ al —e al 



{p—al pal 1 

 j-L-+Qah\ 



