At Constantinople the Arians filled a boat with pious presbyters and drove her without ballast out to sea, putting some of their own men on another craft with orders to set the presbyters boat on fire. So, fighting at the same time against both sea and flames, at last they were delivered to the deep, and won the martyrs crown.
At Antioch Valens spent a considerable time, and gave complete license to all who, under cover of the Christian name, pagans, Jews and the rest, preached doctrines contrary to those of the gospel. The slaves of this error even went so far as to perform pagan rites, and thus the deceitful fire which, after Julian, had been quenched by Jovian, was now rekindled by permission of Valens. The rites of Jews, of Dionysus, and of Demeter were now no longer performed in a corner, as they would be in a pious reign, but by revellers running wild in the forum. Valens was a foe to none but them that held the apostolic doctrine. First he drove them from their churches, the illustrious Jovian having given them also the new built church. And when they assembled close up to the mountain cliff to honour their Master in hymns, and enjoy the word of God, putting up with all the assaults of the weather, now of rain, now of snow and cold, and now of violent heat, they were not even suffered this poor protection, and troops were sent to scatter them far and wide.
Source: Ecclesiastical History (New Advent)