was there because the bank had no lunch hour, and because he had just witnessed the most suspicious circumstance that his constantly alert eye had ever beheld.  Calm and imperturbable as a bank cashier may appear to the outside public, he is a man under constant strain during business hours.  Each person with whom he is unacquainted that confronts him at his post is a possible robber who at any moment may attempt, either by violence or chicanery, to filch the treasure he guards.  The happening of any event outside the usual routine at once arouses a cashier’s distrust, and this sudden flight of a stranger with money which did not belong to him quite justified the perturbation of the cashier.  From that point onward, innocence of conduct or explanation so explicit as to satisfy any ordinary man, becomes evidence of more subtle guilt to the mind of a bank official.  The ordinary citizen, seeing the Lieutenant finally overtake and accost the hurrying girl, raise his cap, then pour into her outstretched hand the gold he had taken, would have known at once that here was an every-day exercise of natural politeness.  Not so the cashier.  The farther he got from the bank, the more poignantly did he realize that these two in front, both strangers to him, had, by their combined action, lured him, pistol and all, away from his post during the dullest hour of the day.  It was not the decamping with those few pieces of gold which now troubled him:  it was fear of what might be going on behind him.  He was positive that these two had acted in conjunction.  The uniform worn by the man did not impose upon him.  Any thief could easily come by a uniform, and, as his mind glanced rapidly backwards over the various points of the scheme, he saw how effectual the plan was:  first, the incredible remissness of the woman in leaving her gold on the counter; second, the impetuous disappearance of the man with the money; and, third, his own heedless plunge into the street after them.  He saw the whole plot in a flash:  he had literally leaped into the trap, and during his five or ten minutes’ absence, the accomplices of the pair might have overawed the unarmed clerks, and walked off with the treasure.  His cash drawer was unlocked, and even the big safe stood wide open.  Surprise had as effectually lured him away as if he had been a country bumpkin.  Bitterly and breathlessly did he curse his own precipitancy.  His duty was to guard the bank, yet it had not been the bank that was robbed, but, at best a careless woman who had failed to pick up her money.  He held the check for it, and the loss, if any, was hers, not the bank’s, yet here he was, running bareheaded down the street like a fool, and now those two stood quite calmly together, he handing her the money, and thus spreading a mantle of innocence over the vile trick.  But whatever was happening in the bank, he would secure two of the culprits at least.  The two, quite oblivious of the danger that threatened them, were somewhat startled by a panting man, trembling with rage, bareheaded, and flourishing a deadly weapon, sweeping down upon them.