1160 
TABIE IS 
me B Limit value Number of particles 
HU | : = Ze 
Be Pe as | Dilution | 20 times ‚Number calcul- | 
| 5 x KCI BaCl, AIK[SOy), | | 
used the number | ated for 1 : 2000 
1)| 5 56 | 0.99 | 0.183 | ze | = = | 
2 | 18.0 | 69| 1.20 | 0.291 210 wrs 19 
3 | 42.8 | 50| 1.92 0.540 ee NE 55 
| | | 
4 1454) 4 58: 1 2287 470. 648 “a | | 37 | 185 | 
eer 
1) No. 1 is borrowed from the investigation of KRuyT and van Duin, | 
loc.cit. Table X, 
Ratio limit value 
5 18,0 42.8 74.7 
concentration As2S3 
Fig. 3. 
1.00. From this we notice how the resulls completely confirm the 
correctness of the train of thoughts of the previous paragraph. To 
the less regular course with the monovalent cation we will refer 
presently. 
4. We desired to get some insight whether our premise that the 
dispersity “degree of our sols was still the same, had proved satis- 
factory. Direct determinations of the dispersity degree have been 
carried out by Zsigmonpy') with gold sols, by Wiener *) with oil 
1) Ann. de Phys. [4] 10 16 (1903). 
2) Koll. Beih. 2 213 (1911). 
