It was natural, therefore, that they should keep a very practical control over the composition of that body. The situation was much as if a modern nation were ruled by a virtual autocrat assisted by a House of Peers. The senators and their families formed a "senatorial order." So far as the Romans had such a thing as a peerage under the empire, it is to be found in the senatorial order. And as a title may now be either hereditary or conferred by the sovereign as the "fount of honour," so, under the Roman emperors, the right to belong to the senatorial order might come from birth or from the choice of the head of the state. Normally you belonged to the "order" if you were the son of a senator; you ranked in that class of society. To belong to the Senate itself and to take part in its debates you must then have held a certain public office and must possess not less than £8000. The £8000 is the minimum. Most senators were rich, and some were enormously wealthy. They are found with a capital of £3,000,000 or £4,000,000 and an income up to £150,000. As for the public office which you must first hold, you could not even be a candidate for it unless you were already of the "order." If, when you are a senator, there is anything serious against you, or if you become impoverished, your name may be expunged from the list. Otherwise you remain a senator all your life, and your son in turn is of the "order," and may pass into the Senate by the same process. If you were a popular or highly deserving person, and from any accident had lost your property, the emperor would frequently make up the deficiency, or your brother senators would subscribe the necessary amount. But an emperor could meanwhile raise to the "order" anyone he chose. He could give him standing, and so make him eligible as a candidate for that public office which was preliminary to entering the actual Senate. Moreover, when it came to the elections to this office which served as the indispensable stepping-stone to the Senate-House, the vacancies were limited in number, and the emperor had the right of either nominating or recommending the candidates whom he preferred. Needless to say, those candidates were invariably elected. It was, of course, monstrous arrogance for Caligula to boast that he could make his horse a consul if he chose, but the taunt contained a measure of truth. Let us then put the case thus. Imagine that a modern senate is recruited from persons whose names are in the _Peerage and Baronetage_, and that, before any scion of such a family can enter the Senate itself, he must go through some sort of under-secretaryship, to which he must first be elected.