404 
Lincoln—Electrical Conductivity. 
its solutions conduct slightly — compare with chloral. The mono 
chloracetate, the cyanacetate and the acetoacetate of ethyl all 
yield solutions that conduct well. The high dielectric constant 
of the last two will be noted as well as the coefficient of asso¬ 
ciation of the last, which indicates that its molecules are not 
polymerized. In ethyl monochloracetate AgN0 3 is not soluble,, 
while in the cyanacetate it dissolves readily, and the resulting 
solution conducts well. Theelectical conductivity of solutions in 
propyl acetate, butyl acetate and ethyl benzoate is very slight, 
and it will be noticed that the dielectric constants of these sol¬ 
vents are also low. Propyl propionate solutions conducted very 
little and in the case of amyl butyrate and amyl valerianate 
only slight deflections of the galvanometer needle were observed. 
It is probable that the dielectric constants of these esters are 
very low. Ethyl oxalate solutions conduct: but those of ethyl 
carbonate do not, notwithstanding the high oxygen content of 
this solvent, while ethyl chiorcarbonate yields solutions that 
conduct very well. 
The class of organic solvents containing nitrogen are of par¬ 
ticular interest. It will be noticed that ethyl nitrate, amyl 
nitrite, nitrobenzene, nitrotoluene, benzonitrile and pyridine 
yield solutions that conduct fairly well (See quantitative de¬ 
terminations). The dielectric constants of these solvents that 
have been determined would tend to indicate that their solu¬ 
tions would conduct. According to the association coefficients 
as determined by Ramsay and Shields the molecules of nitro¬ 
benzene, benzonitrile and pyridine are not polymerized. The 
solutions of ferric chloride in aniline, methylaniline and 
dimethylaniline conduct very poorly, whereas benzylamine ap¬ 
pears to conduct slightly better. 
In the toluidines ferric chloride is difficultly soluble and only 
a very slight movement of the galvanometer needle was ob¬ 
served. In xylidine most of the salts were insoluble; but sil¬ 
ver nitrate dissolved quite readily and conducted fairly well,, 
and the same was found to be the case in aniline. The dielec¬ 
tric constant for aniline is low, and the coefficient of association, 
shows very slight polymerization. Phenylhydrazine dissolves 
ferric chloride readily, but not the slightest movement of the? 
