1Ulpianus, On the Duties of Consul, Book II. It is the duty of the Consul to appoint a council for those who desire to manumit slaves. 1Consuls can manumit together, or alone, but he who has left names with one Consul cannot manumit before another for then the manumissions are separate; and if, for any reason, either through sickness, or through being prevented by any other just cause, one of them cannot manumit, the Senate has decided that his colleague can proceed with the manumission. 2There is no doubt that Consuls can manumit their own slaves before themselves, but if it should happen that a Consul is under twenty years of age, he has not the power of manumission in his own tribunal, as he himself is the one who, according to a decree of the Senate, must determine the ground for the appointment of a council. He can, however, do this before his colleague where proper cause has been established.