'The blue mist,' he muttered, with a shiver. 'I have been watching it this half-hour, your Excellency. It is rising fast.'

I cried out on him for a maudlin fool, and M. d'Agen swore impatiently; but for all that, and despite the contempt I strove to exhibit, I felt a sudden chill at my heart as I recognised in the valley below the same blue haze which had attended us through yesterday's ride, and left us only at nightfall. Involuntarily we both fell to watching it as it rose slowly and more slowly, first enveloping the lower woods, and then spreading itself abroad in the sunshine. It is hard to witness a bold man's terror and remain unaffected by it; and I confess I trembled. Here, in the moment of our seeming success, was something which I had not taken into account, something against which I could not guard either myself or others!

'See!' Maignan whispered hoarsely, pointing again with his linger. 'It is the Angel of Death, your Excellency! Where he kills by ones and twos, he is invisible. But when he slays by hundreds and by thousands, men see the shadow of his wings!'

'Chut, fool!' I retorted with, anger, which was secretly proportioned to the impression his weird saying made on me. 'You have been in battles! Did you ever see him there? or at a sack? A truce to this folly,' I continued. 'And do you go and inquire what food we have with us. It may be necessary to send for some.'

I watched him go doggedly off, and knowing the stout nature of the man and his devotion to his master, I had no fear that he would fail us; but there were others, almost as necessary to us, in whom I could not place the same confidence. And these had also taken the alarm. When I turned I found groups of pale-faced men, standing by twos and threes at my back; who, pointing and muttering and telling one another what Maignan had told us, looked where we had looked. As one spoke and another listened, I saw the old panic revive in their eyes. Men who an hour or two before had crossed the court under fire with the utmost resolution, and dared instant death without a thought, grew pale, and looking from this side of the valley to that; with faltering eyes, seemed to be seeking, like hunted animals, a place of refuge. Fear, once aroused, hung is the air. Men talked in whispers of the abnormal heat, and, gazing at the cloudless sky, fled from the sunshine to the shadow; or, looking over the expanse of woods, longed to be under cover and away from this lofty eyrie, which to their morbid eyes seemed a target for all the shafts of death.

I was not slow to perceive the peril with which these fears and apprehensions, which rapidly became general, threatened my plans. I strove to keep the men employed, and to occupy their thoughts as far as possible with the enemy and his proceedings; but I soon found that even here a danger lurked; for Maignan, coming to me by-and-by with a grave face, told me that one of Bruhl's men had ventured out, and was parleying with the guard on our side of the court. I went at once and broke the matter off, threatening to shoot the fellow if he was not under cover before I counted ten. But the scared, sultry faces he left behind him told me that the mischief was done, and I could think of no better remedy for it than to give M. d'Agen a hint, and station him at the outer gate with his pistols ready.

The question of provisions, too, threatened to become a serious one; I dared not leave to procure them myself, nor could I trust any of my men with the mission. In fact the besiegers were rapidly becoming the besieged. Intent on the rising haze and their own terrors, they forgot all else. Vigilance and caution were thrown to the winds. The stillness of the valley, its isolation, the distant woods that encircled us and hung quivering in the heated air, all added to the panic. Despite all my efforts and threats, the men gradually left their posts, and getting together in little parties at the gate, worked themselves up to such a pitch of dread that by two hours after noon they were fit for any folly; and at the mere cry of 'plague!' would have rushed to their horses and ridden in every direction.

It was plain that I could depend for useful service on myself and three others only--of whom, to his credit be it said, Simon Fleix was one. Seeing this, I was immensely relieved when I presently heard that Fresnoy was again seeking to speak with me. I was no longer, it will be believed, for standing on formalities; but glad to waive in silence the punctilio on which I had before insisted, and anxious to afford him no opportunity of marking the slackness which prevailed among my men, I hastened to meet him at the door of the courtyard where Maignan had detained him.

I might have spared my pains, however. I had no more than saluted him and exchanged the merest preliminaries before I saw that he was in a state of panic far exceeding that of my following. His coarse face, which had never been prepossessing, was mottled and bedabbled with sweat; his bloodshot eyes, when they met mine, wore the fierce yet terrified expression of an animal caught in a trap. Though his first word was an oath, sworn for the purpose of raising his courage, the bully's bluster was gone. He spoke in a low voice, and his hands shook; and for a penny-piece I saw he would have bolted past me and taken his chance in open flight.

I needed nothing after this to assure me that he meditated something of the basest; and I took care how I answered him. 'I have known you stiff enough upon occasions,' I replied drily. 'And then, again, I have known you not so stiff, M. Fresnoy.'