With this answer the ambassador returned to those by whom he had been sent. He had no sooner reached the main body than a murmur was heard amongst the multitude, and there was raised in front of their ranks an ample red flag, the borders of which were edged with blue. As the signal of war and defiance spread out its large folds upon the morning wind, the ancient banner of Lady Margaret's family, together with the royal ensign, were immediately hoisted on the walls of the Tower, and at the same time, a round of artillery was discharged against the foremost ranks of the insurgents, by which they sustained some loss. Their leaders instantly withdrew them to the shelter of the brow of the hill. "I think," said John Gudyill, while he busied himself in re-charging his guns, "they hae fund the falcon's neb a bit ower hard for them--It's no for nought that the hawk whistles." But as he uttered these words, the ridge was once more crowded with the ranks of the enemy. A general discharge of their fire-arms was directed against the defenders upon the battlements. Under cover of the smoke, a column of picked men rushed down the road with determined courage, and, sustaining with firmness a heavy fire from the garrison, they forced their way, in spite of opposition, to the first barricade by which the avenue was defended. They were led on by Balfour in person, who displayed courage equal to his enthusiasm; and, in spite of every opposition, forced the barricade, killing and wounding several of the defenders, and compelling the rest to retreat to their second position. The precautions, however, of Major Bellenden rendered this success unavailing; for no sooner were the Covenanters in possession of the post, than a close and destructive fire was poured into it from the Castle, and from those stations which commanded it in the rear. Having no means of protecting themselves from this fire, or of returning it with effect against men who were under cover of their barricades and defences, the Covenanters were obliged to retreat; but not until they had, with their axes, destroyed the stockade, so as to render it impossible for the defenders to re-occupy it. Balfour was the last man that retired. He even remained for a short space almost alone, with an axe in his hand, labouring like a pioneer amid the storm of balls, many of which were specially aimed against him. The retreat of the party he commanded was not effected without heavy loss, and served as a severe lesson concerning the local advantages possessed by the garrison.