THE PHYSICAL PROPERTIES OF AQUEOUS SOLUTIONS. 
Ill 
purpose of this paper. It was drawn on a larger scale for the very dilute end, and 
the values adopted for the different concentrations for very dilute solutions were 
taken from this curve. 
( b) Density , Viscosity and Conductivity of Mixtures of Normal Solutions of KOI 
and NaCl.—In this series of experiments, stock normal solutions of KC1 and NaCl 
were made up, and the density, viscosity and conductivity of these solutions and of 
mixtures thereof were determined at 18° C. The mixtures were made by means of 
100- and 200-cub. centim. flasks (stamped at the P.T.R.). The densities and 
viscosities were determined as before described. The conductivities were measured 
by Kohlrausch’s method with wheel bridge and telephone with the special variations 
described in a former paper (Botjsfield and Lowry, ‘ Phil. Trans.,’ A, vol. 204, p. 286, 
1905). The platinum pot containing a glass-shielded electrode was used as the 
conductivity vessel—resistance capacity = 16'310. The conductivities observed are 
given in Table X., Part III. (e). 
