The death of Numa forms the conclusion of the first _saeculum_, and an entirely new period follows, just as in the Theogony of Hesiod the age of heroes is followed by the iron age; there is evidently a change, and an entirely new order of things is conceived to have arisen. Up to this point we have had nothing except poetry, but with Tullus Hostilius a kind of history begins, that is, events are related which must be taken in general as historical, though in the light in which they are presented to us they are not historical. Thus, for example, the destruction of Alba is historical, and so in all probability is the reception of the Albans at Rome. The conquests of Ancus Martius are quite credible; and they appear like an oasis of real history in the midst of fables. A similar case occurs once in the chronicle of Cologne. In the Abyssinian annals, we find in the thirteenth century a very minute account of one particular event, in which we recognize a piece of contemporaneous history, though we meet with nothing historical either before or after. The history which then follows is like a picture viewed from the wrong side, like phantasmata; the names of the kings are perfectly fictitious; no man can tell how long the Roman kings reigned, as we do not know how many there were, since it is only for the sake of the number that seven were supposed to have ruled, seven being a number which appears in many relations, especially in important astronomical ones. Hence the chronological statements are utterly worthless. We must conceive as a succession of centuries the period from the origin of Rome down to the times wherein were constructed the enormous works, such as the great drains, the wall of Servius, and others, which were actually executed under the kings and rival the great architectural works of the Egyptians. Romulus and Numa must be entirely set aside; but a long period follows, in which the nations gradually unite and develop themselves until the kingly government disappears and makes way for republican institutions.