Susceptibility measurements on the first five primary alkyl acetates and on methanol, made with the manometric balance of Wills and Boeker over the range 5°-70°, are described. The results show a very slight variation of susceptibility with temperature and an indication of increasing temperature dependence for higher members of the acetate series. The molecular susceptibility of C${\mathrm{H}}_2$ is found to be additive in agreement with Pascal's law. The magnetic properties of Ni${\mathrm{Cl}}_2$ solutions are discussed with special regard to the work of Fahlenbrach, and experiments on Ni${\mathrm{Cl}}_2$ solutions as used for calibrating the manometric balance are described. No variation in the calibration depending on the method of preparing the solutions was found.

• Received 1 August 1935

DOI:https://doi.org/10.1103/PhysRev.48.672