As the house-master was not simply the greatest but the only power in the house, so the king was not merely the first but the only holder of power in the state. He might indeed form colleges of men of skill composed of those specially conversant with the rules of sacred or of public law, and call upon them for their advice; he might, to facilitate his exercise of power, entrust to others particular functions, such as the making communications to the burgesses, the command in war, the decision of processes of minor importance, the inquisition of crimes; he might in particular, if he was compelled to quit the bounds of the city, leave behind him a "city-warden" (-praefectus urbi-) with the full powers of an -alter ego-; but all official power existing by the side of the king's was derived from the latter, and every official held his office by the king's appointment and during the king's pleasure. All the officials of the earliest period, the extraordinary city-warden as well as the "leaders of division" (-tribuni-, from -tribus-, part) of the infantry (-milites-) and of the cavalry (-celeres-) were merely commissioned by the king, and not magistrates in the subsequent sense of the term. The regal power had not and could not have any external check imposed upon it by law: the master of the community had no judge of his acts within the community, any more than the housefather had a judge within his household. Death alone terminated his power. The choice of the new king lay with the council of elders, to which in case of a vacancy the interim-kingship (-interregnum-) passed. A formal cooperation in the election of king pertained to the burgesses only after his nomination; -de jure- the kingly office was based on the permanent college of the Fathers (-patres-), which by means of the interim holder of the power installed the new king for life. Thus "the august blessing of the gods, under which renowned Rome was founded," was transmitted from its first regal recipient in constant succession to those that followed him, and the unity of the state was preserved unchanged notwithstanding the personal change of the holders of power.