The moral advantage however rested with the king. Essex had learned that his troopers were no match for the Cavaliers, and his withdrawal to Warwick left open the road to the capital. Rupert pressed for an instant march on London, where the approach of the king's forces had roused utter panic. But the proposal found stubborn opponents among the moderate Royalists, who dreaded the complete triumph of Charles as much as his defeat; and their pressure forced the king to pause for a time at Oxford, where he was received with uproarious welcome. When the cowardice of its garrison delivered Reading to Rupert's horse, and his daring capture of Brentford in November drew the royal army in his support almost to the walls of the capital, the panic of the Londoners was already over, and the junction of their train-bands with the army of Essex forced Charles to fall back again on his old quarters. But though the Parliament rallied quickly from the blow of Edgehill, the war, as its area widened through the winter, went steadily for the king. The fortification of Oxford gave him a firm hold on the midland counties; while the balance of the two parties in the North was overthrown by the march of the Earl of Newcastle, with a force he had raised in Northumberland, upon York. Lord Fairfax, the Parliamentary leader in that county, was thrown back by Newcastle's attack on the manufacturing towns of the West Riding, where Puritanism found its stronghold; and the arrival of the queen in February 1643 with arms from Holland encouraged the royal army to push its scouts across the Trent, and threaten the eastern counties, which held firmly for the Parliament. The stress of the war was shown by the vigorous efforts of the Houses. Some negotiations which had gone on into the spring were broken off by the old demand that the king should return to his Parliament; London was fortified; and a tax of two millions a year was laid on the districts which adhered to the Parliamentary cause. [Sidenote: The Cornish rising.]