Suetonius Divus Augustus 35

By two separate scrutinies he reduced to their former number and splendour the senate, which had been swamped by a disorderly crowd; for they were now more than a thousand, and some of them very mean persons, who, after Caesar's death, had been chosen by dint of interest and bribery, so that they had the nickname of Orcini among the people. ¹ The first of these scrutinies was left to themselves, each senator naming another; but the last was conducted by himself and Agrippa. On this occasion he is believed to have taken his seat as he presided, with a coat of mail under his tunic, and a sword by his side, and with ten of the stoutest men of senatorial rank, who were his friends, standing round his chair. Cordus Cremutius ² relates that no senator was suffered to approach him, except singly, and after having his bosom searched [for secreted daggers]. Some he obliged to have the grace of declining the office; these he allowed to retain the privileges of wearing the distinguishing dress, occupying the seats at the solemn spectacles, and of feasting publicly, reserved to the senatorial order. ³ That those who were chosen and approved of, might perform their functions under more solemn obligations, and with less inconvenience, he ordered that every senator, before he took his seat in the house, should pay his devotions, with an offering of frankincense and wine, at the altar of that God in whose temple the senate then assembled, ⁴ and that their stated meetings should be only twice in the month, namely, on the calends and ides; and that in the months of September and October, ⁵ a certain number only, chosen by lot, such as the law required to give validity to a decree, should be required to attend. For himself, he resolved to choose every six months a new council, with whom he might consult previously upon such affairs as he judged proper at any time to lay before the full senate. He also took the votes of the senators upon any subject of importance, not according to custom, nor in regular order, but as he pleased; that every one might hold himself ready to give his opinion, rather than a mere vote of assent.