In process of time, the instruments by which the imagination works are brought to perfection. Men have not more imagination than their rude ancestors. We strongly suspect that they have much less. But they produce better works of imagination. Thus, up to a certain period, the diminution of the poetical powers is far more than compensated by the improvement of all the appliances and means of which those powers stand in need. Then comes the short period of splendid and consummate excellence. And then, from causes against which it is vain to struggle, poetry begins to decline. The progress of language, which was at first favourable, becomes fatal to it, and, instead of compensating for the decay of the imagination, accelerates that decay, and renders it more obvious. When the adventurer in the Arabian tale anointed one of his eyes with the contents of the magical box, all the riches of the earth, however widely dispersed, however sacredly concealed, became visible to him. But, when he tried the experiment on both eyes, he was struck with blindness. What the enchanted elixir was to the sight of the body, language is to the sight of the imagination. At first it calls up a world of glorious allusions; but, when it becomes too copious, it altogether destroys the visual power. As the development of the mind proceeds, symbols, instead of being employed to convey images, are substituted for them. Civilised men think as they trade, not in kind, but by means of a circulating medium. In these circumstances, the sciences improve rapidly, and criticism among the rest; but poetry, in the highest sense of the word, disappears. Then comes the dotage of the fine arts, a second childhood, as feeble as the former, and far more hopeless. This is the age of critical poetry, of poetry by courtesy, of poetry to which the memory, the judgment, and the wit contribute far more than the imagination. We readily allow that many works of this description are excellent: we will not contend with those who think them more valuable than the great poems of an earlier period. We only maintain that they belong to a different species of composition, and are produced by a different faculty. It is some consolation to reflect that this critical school of poetry improves as the science of criticism improves; and that the science of criticism, like every other science, is constantly tending towards perfection. As experiments are multiplied, principles are better understood. In some countries, in our own for example, there has been an interval between the downfall of the creative school and the rise of the critical, a period during which imagination has been in its decrepitude, and taste in its infancy. Such a revolutionary interregnum as this will be deformed by every species of extravagance.