An empirical analysis of the results of time- and temperature dependences of the electrical resistanceRof metal-ammonia solutionsNH3:Nawith different Na concentrations quenched in liquid nitrogen point towards an anomalously high but finite conductivity rather than superconductivity. In particular, the time dependenceR(t)of solutionsNH3:Naquenched rapidly atT<80 Kcan be described correctly by a “logistic curve” with a nonzero initial valueR(0)≠0(att=0).©1998 American Institute of Physics.