1. See p. 294, n. 2, on financing choruses etc. When someone was called upon by the State to perform some such duty, he had the right to summon someone else, who had not been asked, to an ‘exchange of property’: he challenged the other person, whom he considered better off, either to exchange property with him or to undertake the duty.

2. Compare 3.11–16 (pp. 299–300).