(712 ) 
by the conic elements d/2,,, d4,,, and dà, being denoted by — %,,, 
—y,,, and z,,. The following integrals are represented by &,,, 4, 
and 
> 
12 
Let us now again consider a canonic ensemble of the modulus @, 
built up of a system, in which n, atoms /, and 7, atoms H, are 
found in the volume WV. Arguing in an analogous way to the preceding 
case we now see easily that the number of the systems in which 
n,, definite / atoms are free, 2n,, definite / atoms are bound to 
definite pairs, 7,, definite / atoms are bound with definite H atoms, 
2n,, definite H atoms are bound to pairs, and n,, H atoms are free 
amounts to ¢': 
¥ 5, 
vI— No® (220m,)” 2aOm,) (427) m+ Vine Nee Mak, uk, Paak, „Pia, 
ME 
to | oe 
in which m, and m, represent the mass of a /, and of an // atom. 
As from n, atoms / and n, atoms M groups of 2n,, etc. atoms 
can be formed in: 
n, ! n,! 
= , resp. 
(An nme 
Dn Inta 
ways, and the 27,, atoms / and 2n,, atoms H can be combined to 
pairs in resp. : 
CO | (an)! 
: and 
nn. Ansen, / 
ways, while n,, molecules H/ can be formed from the chosen 
numbers H and J in n,,/ ways, we find for the number of considered 
systems in the ensemble: 
Y 3 3 
zn = Ny 7 Ng 
oN 2° (2rOm) (22%0m,) (Arms V mores Pras" 2n 
n.! m,! 
pn : k Mu k N29 k Nije, 
n In..tn..t nf nef nnn ™ BP = 
(Oty alia. TIENS 20 5 
We must now examine on what conditions ¢ is maximum, if the 
following equations hold: 
