The possession of such qualities, however, could not be expected to recommend him particularly to the favor of the emperor. In fact, in one instance it had the contrary effect. Caligula assigned to the centurions of his guard, at one period, some duties connected with the collection of taxes. Chærea, instead of practicing the extortion and cruelty common on such occasions, was merciful and considerate, and governed himself strictly by the rules of law and of justice in his collections. The consequence necessarily was that the amount of money received was somewhat diminished, and the emperor was displeased. The occasion was, however, not one of sufficient importance to awaken in the monarch's mind any very serious anger, and so, instead of inflicting any heavy punishment upon the offender, he contented himself with attempting to tease and torment him with sundry vexatious indignities and annoyances. It is the custom sometimes, in camps, and at other military stations, for the commander to give every evening, what is called the _parole_ or password, which consists usually of some word or phrase that is to be communicated to all the officers, and as occasion may require to all the soldiers, whom for any reason it may be necessary to send to and fro about the precincts of the camp during the night. The sentinels, also, all have the password, and accordingly, whenever any man approaches the post of a sentinel, he is stopped and the parole is demanded. If the stranger gives it correctly, it is presumed that all is right, and he is allowed to pass on,--since an enemy or a spy would have no means of knowing it. Now, whenever it came to Chærea's turn to communicate the parole, the emperor was accustomed to give him some ridiculous or indecent phrase, intended not only to be offensive to the purity of Chærea's mind, but designed, also, to exhibit him in a ridiculous light to the subordinate officers and soldiers to whom he would have to communicate it. Sometimes the password thus given was some word or phrase wholly unfit to be spoken, and sometimes it was the name of some notorious and infamous woman; but whatever it was, Chærea was compelled by his duty as a soldier to deliver it to all the corps, and patiently to submit to the laughter and derision which his communication awakened among the vile and wicked soldiery.