In this character Mr. Cooper would extort commendation from the most churlish critic. Alexander is a compound of Hero and Lover, and in both extravagant and enthusiastic almost to madness. It is in the former of these Mr. C. chiefly displayed his powers. His voice, his person, and his manner qualified him for an impressive delineation of that portion of the character--but as a lover Mr. Cooper only serves to remind us with disadvantage to him, of actors we have seen before. In the proud and boastful exultation, the starts of anger, the quick resentment, and ardent friendship, the sudden alternation of storm and calm, and, in a word, the medley of eccentric vices and virtues which compose this gigantic offspring of Lee's bright but fevered brain, the severest criticism must concur with the public opinion, which ranks Mr. Cooper's Alexander high among the first specimens of the art exhibited in the English language. Adverting to the first scene of the second act, when irritated by Lysimachus demanding the princess Parisatis in marriage; in the swell of passion from the mild rebuke, Lysimachus, no more--it is not well; My word you know, was to Hephestion given, up to the storm of rage "My slave, whom I Could tread to clay, dares utter bloody threats." The climax of temper was in every transition marked by Mr. Cooper with a natural propriety which, though a vigorous and accurate critical judgment might suggest, nothing but a high dramatic genius, seconded by correspondent organs, could possibly have executed. Several steps higher still in merit criticism must place the whole of the banquet scene. The intoxicated vanity of Alexander--his soft and puerile susceptibility of gross and fulsome adulation, his idle contest with the blunt old Clytus, his fury and cruel murder of that brave old soldier, and his outrageous grief and self reproach for that murder, in all of which the fiery brain of the poet has urged the passions to the utmost verge of nature, Mr. Cooper was all for which the most sanguine admirer could wish, or a reasonable critic hope. But as, in the best drawn portraits, one or more limbs or features will be found superior to the rest, so in this scene of aggregate excellence, there were three successive speeches of such preeminent excellence and superiority that they ought to be commemorated. They all turn upon the provoking insinuation of Clytus: Philip fought men--but Alexander women. In the jealousy, the astonishment, the wrath of the insulted hero, the expression of the actor kept equal flight with the bold wing of the poet. Accustomed as we have been to the prodigious exertions of the greatest actors in the world we have not witnessed nor can we conceive any thing superior to Mr. Cooper in the following speeches----