one o'clock
Sleep delayed her visit ; the angel of desolation flapped her pinions over his brow , and inspired him with the most terrific plans of destruction . And doubtless at that very hour the algebra professor was tranquilly sleeping without the slightest suspicion of the misfortune overhanging him . When this suggestion presented itself to Utrilla , he could not help smiling in a most sinister fashion between the sheets . At last Morpheus succeeded in overcoming him , but with no intention of sending sweet and refreshing dreams ; a thousand gloomy nightmares tormented him all night long ; from one o'clock till six in the morning he battled with his enemy , using all the methods known at the present day , and some of his own invention . Now he beheld himself facing the hateful professor with a foil in his hand ; the professor had wounded him in the right hand , but nevertheless Utrilla , without a moment 's hesitation , exclaimed : `` Come on . Use the left hand ! '' filling all the witnesses full of admiration at his coolness .