Under him the nation grew still more rapidly, and others were made subject to it, all of which good fortune was attributed to his prowess and skill. Romulus became after a while somewhat arrogant. He dressed in scarlet, received his people lying on a couch of state, and surrounded himself with a body of young soldiers called _Celeres_, from the swiftness with which they executed his orders. It was a suspicious fact that all at once, at a time when the people had become dissatisfied with his actions, Romulus disappeared (717 B.C.). Like Evander, he went, no one knew where, though one of his friends presented himself in the forum and assured the people under oath that one day, as he was going along the road, he met Romulus coming toward him, dressed in shining armor, and looking comelier than ever. Proculus, for that was the friend's name, was struck with awe and filled with religious dread, but asked the king why he had left the people to bereavement, endless sorrow, and wicked surmises, for it had been rumored that the senators had made away with him. Romulus replied that it pleased the gods that, after having built a city destined to be the greatest in the world for empire and glory, he should return to heaven, but that Proculus might tell the Romans that they would attain the height of power by exercising temperance and fortitude, in which effort he would sustain them and remain their propitious god Quirinus. An altar was accordingly erected to the king's honor, and a festival called the Quirinalia was annually celebrated on the seventeenth of February, the day on which he is said to have been received into the number of the gods. Romulus left the people organized into two great divisions, Patricians and Clients: the former being the _Populus Romanus_, or Roman People, and possessing the only political rights; and the others being entirely dependent upon them. The Patricians were divided into three tribes—the Romans (_Ramnes_), the Etruscans (_Luceres_), and the Sabines (_Tities_, from Tatius). Another body, not yet organized, called Plebeians, or Plebs, was composed of inhabitants of conquered towns and refugees. These, though not slaves, had no political rights. Each tribe was divided into ten Curiae, and the thirty Curiae composed the _Comitia Curiata_, which was the sovereign assembly of the Patricians, authorized to choose the king and to decide all cases affecting the lives of the citizens. A number of men of mature age, known as the _Patres_, composed the Senate, which Romulus formed to assist him in the government. This body consisted of one hundred members until the union with the Sabines, when it was doubled, the Etruscans not being represented until a later time. The army was called a Legion, and was composed of a contribution of a thousand foot-soldiers and a hundred cavalry (_Equites_, Knights) from each tribe.