The experiments which Cleopatra thus made on the nature and effects of poison were not, however, wholly without practical result. Cleopatra learned from them, it is said, that the bite of the asp was the easiest and least painful mode of death. The effect of the venom of that animal appeared to her to be the lulling of the sensorium into a lethargy or stupor, which soon ended in death, without the intervention of pain. This knowledge she seems to have laid up in her mind for future use. The thoughts of Cleopatra appear, in fact, to have been much disposed, at this time, to flow in gloomy channels, for she occupied herself a great deal in building for herself a sepulchral monument in a certain sacred portion of the city. This monument had, in fact, been commenced many years ago, in accordance with a custom prevailing among Egyptian sovereigns, of expending a portion of their revenues during their life-time in building and decorating their own tombs. Cleopatra now turned her mind with new interest to her own mausoleum. She finished it, provided it with the strongest possible bolts and bars, and, in a word, seemed to be preparing it in all respects for occupation. In the mean time, Octavius, having made himself master of all the countries which had formerly been under Antony's sway, now advanced, meeting none to oppose him, from Asia Minor into Syria, and from Syria toward Egypt. Antony and Cleopatra made one attempt, while he was thus advancing toward Alexandria, to avert the storm which was impending over them, by sending an embassage to ask for some terms of peace. Antony proposed, in this embassage, to give up every thing to his conqueror on condition that he might be permitted to retire unmolested with Cleopatra to Athens, and allowed to spend the remainder of their days there in peace; and that the kingdom of Egypt might descend to their children. Octavius replied that he could not make any terms with Antony, though he was willing to consent to any thing that was reasonable in behalf of Cleopatra. The messenger who came back from Octavius with this reply spent some time in private interviews with Cleopatra. This aroused Antony's jealousy and anger. He accordingly ordered the unfortunate messenger to be scourged and then sent back to Octavius, all lacerated with wounds, with orders to say to Octavius that if it displeased him to have one of his servants thus punished, he might revenge himself by scourging a servant of Antony's, who was then, as it happened, in Octavius's power.