The charge of the small particles of mercury containing various kind of metals in the electrolytic solution was investigated, Employed method was that the deflection of small particles falling from a fine hole of glass tube into the solution through which current was flowing in horizontal direction was observed. The following results were obtained.1) The particles of mercury containing Cu, Ag or pure mercury deflected toward cathode showing charged positive (already known fact).2) The particles of mercury containing K, Na, Zn, Cd, Sn or Pb deflected toward anode, and these particles were assumed charged negative.3) The surface of the mercury containing any one of these metals regardless of deflection in electrolytic solution (NaCl sol.) was positive against carbon electrode.The authors concluded that the results in 2) and 3) were in contradiction and could not be understood. It should be elucidated by future investigation.