"Not yet, Hobbs. Later on, perhaps. I had occasion to make a short tour of investigation this afternoon. Doubtless, gentlemen, you know where the water-gate is, back of the Castle. Well, I've looked it over--and under, I might say. Hobbs, you and I will sneak under those slippery old gates like a couple of eels. I forgot to ask if you can swim."
"To be sure I can. Under the gates? My word!"
"Simple as rolling off a log," said Truxton carelessly. "The Cascades and Basin of Venus run out through the gate. There is a space of at least a foot below the bottom of the gate, which hasn't been opened in fifty years, I'm told. A good swimmer can wriggle through, d'ye see? That lets him out into the little canal that connects with the river. Then--"
"I see!" cried Quinnox. "It can be done! No one will be watching at that point."
The sky was overcast, the night as black as ebony. The four men left the officers' quarters at one o'clock, making their way to the historic old gate in the glen below the Castle. Arriving at the wall, Truxton briefly whispered his plans.
"You remember, Colonel Quinnox, that the stream is four or five feet deep here at the gate. The current has washed a deeper channel under the iron-bound timbers. The gates are perhaps two feet thick. For something like seven or eight feet from the bottom they are so constructed that the water runs through an open network of great iron bars. Now, Hobbs and I will go under the gates in the old-clothes you have given us. When we are on the opposite side we'll stick close by the gate, and you may pass our dry clothes out between the bars above the surface of the water. Our guns, the map and the food, as well. It's very simple. Then we'll drop down the canal a short distance and change our clothes in the underbrush. Hobbs knows where we can procure horses and he knows a trusty guide on the other side of the city. So long, Colonel. I'll see you later."
"God be with you," said Quinnox fervently. The four men shook hands and King slipped into the water without a moment's hesitation.
"Right after me, Hobbs," he said, and then his head went under.
A minute later he and Hobbs were on the outside of the gate, gasping for breath. Standing in water to their necks, Quinnox and Haddan passed the equipment through the barred openings. There were whispered good-byes and then two invisible heads bobbed off in the night, wading in the swift-flowing canal, up to their chins. Swimming would have been dangerous, on account of the noise.