1223 
and newest sources (tables of ABRAHAM and SACERDOTE, Tables An- 
nuelles, values given by K. ONNes aud his collaborators, determina- 
tions of Carposo and others). ‘ 
8. The additive qualities of / in connection with the 
periodic system. 
The values of 4, found can now be composed additively from 
the following fundamental values for by. X 10°. 
|| He < 105? 
Hi 4357) C= 1000) (Na 65 IO = 70 | F =D NEST 
(Si=155) P =140 | S =125 | Cl=115 | Ar=144 
Ge=210 | (As=195)| Se =180 | Br=165 || Kr =177 
Sn = 265 | (Sb—=250)| (Te—235) | 1 —220 || x =228 
The regularity is very striking. In every vertical column the increase 
is 55 units, whereas in every horizontal row the decrease amounts 
to 15 units. (Only Cl—= 115 fits in better than 110). Hydrogen seems 
to belong to the first series, the noble gases evidently always pro- 
longing the horizontal rows. (The value for He still continues to be 
very uncertain; nor is Ne quite certain). 
It must be further observed that C presents two different values. 
In the anorganic compounds and in the aliphatic organic compounds 
C is always=100, but in the aromatic compounds, i.e. in the 
eyelically built compounds, the smaller value 75 should be taken 
for 75. (75 is somewhat greater than 100 X '/, V2 = 71). 
The same thing is found for N. Only for N, itself do we find 
the fundamental value 85; for all other compounds of N on the 
other hand the condensed value 69 (= 85 >< */, V2). 
As for O, here the fundamental value 70 holds everywhere; only 
for CO, and for one of the two oxygen atoms of the organic acid 
group CO.OH (or of the group CO.OX of the compound esters), viz. 
that which just as both atoms in CO, is bound to C through a 
double binding, the diminished value 50 (= 70 x */,W 2) is found. 
For H three values are found. The fundamental value 48,5 only 
for H, and HCl. In the anorganic compounds NH, (and also in the 
radicals NH, and NH), PH,, H,O, H,S, H,Se H is everywhere = 34 
(= 48,5 X '/,W2), whereas in the organic compounds, where H is 
directly bound to C — both in the aliphatic and in the aromatic 
series — the doubly condensed value H=14 = 48,5 x (4—'/,V 2)] 
is found. 
