  We present here the calculation of the 'time dependent' moduli of the third
order, dielectric, susceptibilities measured at the frequency omega of the
applied electric field and at the frequency 3 omega. The calculation is
performed within the frame work of the 'box model', both in the ideal case of a
pure third order polarization and in the practical case studied by Samanta and
Richert [J. Chem. Phys. 140, 247101 (2014)] where appears also a first order
polarization contribution. We show that, in the two cases, those two modules
have a largely different dynamics and that the results can be easily compared
with experiments thanks to the data gathered by Samanta and Richert. This
should provide a new test on the validity of the 'box model'.
