6. The place of writing among such nations, is generally supplied, in a great measure, by poetry; which being in its origin nothing more than imagery expressed in figurative language, must spontaneously arise among men, as yet wont to represent every thing to their minds under the form of images. Hence the subject matter of the poetry of every nation, while in a state of rudeness, is and can be nothing else but its mythology; and the great variety in the materials of which this is composed very naturally gave rise, at the same early period, to various kinds of poetry; as the lyric, the didactic, the epic. The last of these, inasmuch as it contains the historic songs and the epopee, claims in a more especial manner the attention of the historian. The mythi (or fables of which this mythology was composed) were in later times frequently collected from the works of the poets, and committed to writing by grammarians; such as Apollodorus and others. This, however, can have had no effect on their original character. 7. The second source of history, much more copious and important than the former, are the various kinds of written monuments. These may be arranged according to the order of time at which they were brought into use, into three classes; 1st. Inscriptions on public monuments, under which head are included the coins of later date; 2nd. Chronological records of events, under the form of annals and chronicles; 3rd. Real philosophical works on history. 8. Inscriptions on public monuments erected to preserve the remembrance of certain events, though perhaps no more than a stone set upright, or even a bare rock, was used for that purpose, were undoubtedly the most ancient written memorials. These rude monuments became fashioned by art into columns, obelisks, and pyramids, as the taste of the nation became formed; and assumed that definite character which local circumstances and the natural features of the country led it to adopt, as architecture arose and attained to perfection among them. The very object, indeed, for which they were erected--the commemoration of remarkable events,--must have suggested the practice of inscribing upon them some particulars of the facts they were intended to perpetuate. Of this nature, no doubt, were the oldest monuments, and more particularly those of Egypt. Their use was much more general among nations of a later period, especially Greece and Rome, than among the moderns; yet of the great mass of inscriptions still extant, but few comparatively are of any importance as regards history. The characters engraved on these monuments were either symbolical (hieroglyphics; see below under Egypt,) or alphabetical. The invention and transmission of alphabetical writing are commonly ascribed to the Phoenicians; although, if we may judge by the shape of the arrow-headed character, it was made, without communication with them, in the interior of Asia. The general collections of inscriptions are: