198 A, R. Leeds— Dissociation of certain Compounds. 
can be detected and recognized by sufficiently delicate tests. 
3d. That it is highly probable that the dissociation of these 
salts in solution is analogous to the evaporation of the solvent, 
and that while it arrives at a maximum, under ordinary atmos- 
pheric pressures, at the boiling points of their saturated solu- 
tions, yet it takes place in a diminishing proportion at much 
lower temperatures, in some cases even below their freezng 
liquid. A short tube entering the neck of the flask at Asi 
very gradually and slowly, about a half hour being required 
for each determination. Th i 
alizarin paper at the temperatures indicated. In the case of 
* Comptes Rendus, lxiv, p. 606. 
