β Scribed by H.L.
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dielectric constant obtainable at various temperatures. To determine when the resonance is at its best, a third circuit is coupled to the second. In it is a crystal detector transmitting current to an Einthoven string galvanometer.
Aniline, nitrobenzene, glycerine and water were studied. In all the dielectric constant grew less as the temperature rose, and in all the decrease was very considerable. For aniline the constant at .25 Β° C. was 7.418 and at 174.5 Β°, 4.194. Nitrobenzene manifested the greatest change, I8.6 Β°, 35.67; 2o3.9 Β°, 15.37. Glycerine, I7 Β°, 46.6; 144.5 Β°, 28. 7. Water, 2.3 Β°, 9o.7; 99.5 Β°, 57.4. A formula proposed by Debye connecting density, temperature and dielectric constant is found to fit the facts well, but the values of certain numerical constants that must be supplied in the formula are in " flagrant disagreement" with Debye's theory.
It is surely a misnomer to call the specific inductive capacity a constant, when experiment shows that it is a variable.
π SIMILAR VOLUMES
In a previous paper on Canal management we examined the treaties and regulations underpinning firstly American and later Panamanian administration of the Canal. We also looked at the transfer of the Canal into Panamanian hands, including the management models used, ending with a review of toll struc