value to the man who doth not happen to possess a straight eye or a steady hand with firearms. For add but a pinch of it to the charge in your pistol, them aim at your enemy's head, and if you miss killing him, or if he hold you at his mercy, you very soon have him at yours. The fumes from the detonation will cause instant and total blindness."
Despite his horror of the whole thing, Heemskerk had instinctively drawn nearer to his friend. Now, at these words, he stepped back again quickly, as if he had trodden upon an adder. Stoutenburg, with his wonted cynicism, only shrugged his shoulders.
"Have I not said that it would not hurt you?" he said, with a sneer. "In itself it is harmless enough, and only attains its useful properties when fired in connection with gunpowder. But when used as I have explained it to you, it is deadly and unerring. I saw it at work once or twice in Spain. The Prince of Poets prides himself on its invention. He gave me some of the precious powder, and I was glad of it. It may prove useful one day."
He carefully closed the first packet and slipped it back into the secret receptacle of his doublet; then he fell to contemplating the contents of the second packet -- half a dozen tiny pillules, which he kept rolling about in the palm of his hand.
"These," he mused, "are of more proved value for my purpose. Have not De Berg," he added, with a sardonic grin, as he looked once more on his friend, "and the Archduchess, too, heard it noised abroad that Maurice of Nassau hath of late suffered from a mysterious complaint which already threatens to cut him off in his prime, and which up to now hath baffled those learned leeches who were brought over specially from England to look after the health of the exalted patient? Have not you and your friends, my good Heemskerk, heard the rumour too?"
The young man nodded in reply. His parched tongue seemed to cleave to the roof of his mouth; he could not utter a word. Stoutenburg laughed.
"Ah!" he said, with a nod of understanding. "I see that the tale did reach your ears. You understand, therefore, that I must remain here for awhile longer."
And with absolute calm and a perfectly steady hand, he folded up the pillules in the paper screw and put them back in his pocket.
"I could not leave my work unfinished," he said simply.
"But how ---" Heemskerk contrived to stammer at last; and his voice to his own ears sounded hoarse and toneless, like a voice out of the grave.
"How do I contrive to convey these pillules into the Stadtholder's stomach?" retorted Stoutenburg, with a coarse chuckle. "Well, my friend, that is still my secret. But De Berg and the others must trust me a while longer -- trust me and then thank me when the time comes. The Stadtholder once out of the way, the resistance of the United Provinces must of itself collapse like a house of cards. There need be no more bloodshed after that -- no more sanguinary conflicts. Indeed, I shall be acclaimed as a public benefactor -- when I succeed."
"Then -- then you are determined to -- to remain here?" Heemskerk murmured, feeling all the while that anything he said was futile and irrelevant.
But how can a man speak when he is confronted with a hideous spectre that mocks him, even whilst it terrifies?
"I shall remain here for the present," Stoutenburg replied, with perfect coolness.
"I -- I'd best go, then," the other suggested vaguely.
"You had best wait until the daylight. 'Tis easy to lose one's way on the Veluwe."
The young man waited for a moment, irresolute. Clearly he was longing to get away, to put behind him this ghoul-infested molen, with its presiding genii of hatred and of crime. Nay, men like Heemskerk, cultivated and gently nurtured, understood the former easily enough. Men and women knew how to hate fiercely these days, and there were few sensations more thoroughly satisfying than that of holding an enemy at the sword's point.
But poison! The slow, insidious weapon that worked like a reptile, stealthily and in the dark! Bah! Heemskerk felt a dizziness overcome him; sheer physical nausea threatened to rob him of his faculties.
But there was undoubted danger in venturing out on the arid wild, in the darkness and with nought but instinct and a few half-obliterated footmarks to guide one along the track. The young man went to the door and pulled it open. A gust of ice-laden air blew into the great, empty place, and almost knocked the old lanthorn off its peg. Heemskerk stepped out into the night. He felt literally frightened, and, like a nervous child, had the sensation of someone or something standing close behind him and on the point of putting a spectral hand upon his shoulder.
But Stoutenburg had remained sitting on the steps, apparently quite unmoved. No doubt he was accustomed to look his abominable project straight in the face. He even shrugged his shoulders in derision when he caught sight of Heemskerk's white face and horror-filled eyes.
"You cannot start while this blind man's holiday lasts," he said lightly. "Can I induce you to partake of some of the refreshment you were good enough to bring for me?"
But Heemskerk gave him no answer. He was trying to make up his mind what to do; and Stoutenburg, with another careless laugh, rose from his seat and strode across the great barn-like space. There, in a remote corner, where sacks of uncrushed grain were wont to be stacked, stood a basket containing a few simple provisions; a hunk of stale bread, a piece of cheese and two or three bottles of wine. Stoutenburg stooped and picked one of these up. He was whistling a careless tune. Then suddenly he paused, his long back still bent, his arm with the hand that held the bottle resting across his knee, his face, alert and hawk-like, turned in an instant toward the door.
"What was that?" he queried hurriedly.
Heemskerk, just as swiftly, had already stepped back into the barn and closed the door again noiselessly.
"Useless!" commented Stoutenburg curtly. "The horses are outside."
"Where is Jan?" he added after an imperceptible pause, during which Heemskerk felt as if his very heart-beats had become audible.
"On the watch, outside," replied the young man.
Even whilst he spoke the door was cautiously opened from the outside, and a grizzled head wrapped in a fur bonnet was thrust in through the orifice.
"What is it, Jan?" the two men queried simultaneously.
"A man and horse," Jan replied in a rapid whisper.
"Coming from over Amersfoort way. He must have caught sight of the molen, for he has left the track and is heading straight for us."
"Some wretched traveler lost on this God-forsaken waste," Stoutenburg said, with a careless shrug of the shoulders. "I have seen them come this way before."
"But not at this hour of the night?" murmured Heemskerk.
"Mostly at night. It is easier to follow the track by day."
"What shall we do?"
"Nothing. Let the man come. We'll soon see if he is dangerous. Are we not three to one?"
The taunt struck home. Heemskerk looked abashed. Jan remained standing in the doorway, waiting for further orders. Stoutenburg went on quietly collecting the scanty provisions. He found a couple of mugs, and with a perfectly steady hand filled the first one and then the other with the wine.
"Drink this Heemskerk," he said lightly; and held out the two mugs at arm's length. "It will calm your nerves. You too,
