1162 
firmatory experiment. Just the reverse; with a lesser dispersity cor- 
responds a lower limit value. Hence, if the dispersity had been the 
same in all these experiments the difference between the K-, Ba: 
and Al-:-ion would have been still more pronounced. 
5. In order to completely exclude meanwhile the complication 
of the difference in dispersity degree we have still made another 
series of experiments. We have prepared a large quantity of a 
concentrated sol and from this made by dilution with water three 
sols of different concentration. Of these four sols which thus were 
derived from the same original liquid and exhibit undoubtedly *) the 
same average size of particles, we have again determined the value 
limits with KCl, BaCl, and AIK (SO,),. To eliminate all differences 
which might occur owing to the duration of the experiment all deter- 
minations have been made within 38 hours. Table 3 shows the result: 
TABLE 3. 
| ya Limit vande 
| . AsyS 
No. | gr 293 
‚G. sol | | 
RT cl | mac | Anso, I 
ne 5 | mn 4 
(te 5 81 1.35 | 0.106 
| 2 25 61 1570 | 3 30.286 05 | 
| 
3 36 56 2.11 | 0.350 
4 50 53 2 hers: 10402 
a 
4 
ui 
vo 
es 3 
£ k Ba’ 
io) 
Ko. 
AT Os, SR 
5 25 36 50 
Concentration As,53 
Fig. 4. 
1) It cannot be denied with absolute certainty that the dilution may exert an 
influence on the size of the particles, but even if such an influence does exist it is 
certainly of a lower order. 
