a) 
pk being about 200 atm, we find [besides total absence of any 
contraction of the 6-value in the dissociation of Hg,, i.e. (bj), = 
2 >< (x); a value for nm which differs but very little from 2. 
For Antimonium, where V a;), = 8,9 x 10-2 and (bj), = 250» 10-5, 
we should find on the supposition of Sb, at 7%: 
79,2 
250 © 
It is found that the critical temperature of Sb is at least = 2900° 
(abs.), so that at this temperature Sb would be associated to about Sb, 
Wor) caroon. with. (Vat) == do, lie, TO (0g), == LOOS 10-2 we 
should have found: 
(Ti), = 78 > 10! = 247° (abs.). 
fi BLGlae a oii 
(27), == FBX To SOL S= 45° (ass), 
whereas the critical temperature of C is certainly lying above 
6000° abs., so that for 7; carbon would at least have to be = C,,. 
And the same thing holds with respect to silicium and all the 
metals '). 
In the second place we draw attention to this, that substances 
like CCL, SnCl, ete., where the attraction of the C- or the Sn-atom 
is cancelled, will consequently have a relatively: low critical tempe- 
rature. That is to say that these and similar substances (CH,, NH,, 
PH,) would be much less volatile at the ordinary temperature, when 
the said circumstance were not present. 
Thus Vag = 0+ 4 & 5,4 = 21,6 for CCl,, whereas, if the attraction 
of C could make itself felt, a, would be = 24,7 (x 10-2). That 
is to say: now a is only 467, whereas it would be 610 in case of 
attraction of C. Hence in the latter case we should have found for 
Tr, the value 556,2 (the real value of 7%), multiplied by 610 : 467, 
so that we should have found 726°,5 absolute = 458° C. instead of 
283° C. The difference (170°) is very large. 
For SnCl,,° with Va,—=9 for Sn, the value of Va, would have 
been found 30,6 instead of 21,6, i.e. that of a, 986 instead of 467, 
which would have brought 7% to 1189° abs. = 916° C. instead of 
319° C., as it is now. Hence a difference of 600°. 
If for NH, the attraction of the central C-atom could have made 
itself felt, then War would have been =2,9+ 3X 5,2 = 12,5 
instead of 9,6, so that then 7) would have come from 406,0 to 
1) In a following paper we shall however, mention — besides sucha formidable 
association at Tp — another unexpected circumstance, which can account for the 
high critical temperature for metals and some metalloids. 
