It was Lord Byron's opinion that a poet is always to be ranked according to his execution, and not according to his branch of the art. "The poet who executes best," said he, "is the highest, whatever his department, and will ever be so rated in the world's esteem." We have no doubt of the justness of that remark; it is the only principle from which sound criticism can proceed, and upon this basis the reputations of the past have been made up. Considered in this light, Mr. Halleck must be pronounced not merely one of the chief ornaments of new literature, but one of the great masters in a language, classical and immortal, for the productions of genius which have illustrated and enlarged its capacities. There is in his compositions an essential pervading grace, a natural brilliancy of wit, a freedom yet refinement of sentiment, a sparkling flow of fancy, and a power of personification, combined with such high and careful finish, and such exquisite nicety of taste, that the larger part of them must be pronounced models almost faultless in the classes to which they belong. They appear to me to show a genuine insight into the principles of art, and a fine use of its resources: and after all that has been said and written about nature, strength, and originality, the true secret of fame, the real magic of genius is not force, not passion, not novelty, but art. Look all through Milton; look at the best passages of Shakspeare; look at the monuments, "all Greek and glorious," which have come down to us from ancient times, what strikes us principally, and it might almost be said only, is the wonderfully artificial character of the composition; it is the principle of _their_ immortality, and without it no poem can be long-lived. It may be easy to acquire popularity, and easy to display art in writing, but he who obtains popularity by the means and employment of careful, elaborate art, may be confident that his reputation is fixed upon a sure basis. This--for his careless playing with the muse, by which one time he kept the town alive, is scarcely remembered now--this, it seems to me, Mr. Halleck has done; Mr. Halleck, Mr. Bryant, and Mr. Poe, have done above all our authors. THE BENEVOLENT INSTITUTIONS OF NEW-YORK.