This elaborate Roman ceremonial consisted in the main of sacrifices of different kinds, conducted with an endless but ordered variety of detail, of prayers, processions, and festivities, the object of which was either to obtain certain practical results, to discover the will of the gods, or to rejoice with the divine inhabitants of the city over the prosperous event of some undertaking. When we survey it in the Calendar as a whole, it seems to fall naturally into three divisions, which correspond with and illustrate the development of the State from its constituent materials. The Calendar contains in fact in a fossilized condition the remains of three different strata of religious or social development. (1) Here and there we find survivals of what we can only regard as the most primitive condition of human life in ancient Latium: that of men dwelling on forest-clad hill-tops, surrounded by a world of spirits, some of which have taken habitation in, or are in some sort represented by, objects such as trees, animals, or stones. Examples of such objects are the oak of Jupiter Feretrius, the sacred fig-tree of Rumina, the stone of Terminus with its buried sacrifice, and the wolf, the wood-pecker, and spear of Mars. To this earliest stratum may also belong in their ultimate origin those quaint sacrificial or semi-dramatic rites of which we have had examples in the Lupercalia, the Fordicidia, and the Parilia. The casting of the Argei into the Tiber may perhaps also be reckoned here, though connected later on with certain divisions of the developed city of which the meaning and origin are lost to us. This primitive population knew also of charms and spells and omens, not reduced indeed as yet to a definite system, of which the Calendar naturally supplies hardly any indications, while in Ovid and Cato not a few survivals meet us. But the investigation of the oldest culture of central Italy is more especially the province of archaeology, and to the archaeologists, who are now in Italy doing excellent and elaborate work, I must be content to leave it.