“If they are not here soon,” he said to himself, “they will not get across the Nith tonight.  None but bold riders could do so now; but by what uncle says, Captain Hume must be that and more.  Ah! here they come.”

As he spoke two horsemen rode down the opposite side of the valley and halted at the water’s edge.  The prospect was not a pleasant one.  The river was sixty or seventy feet wide, and in the centre the water swept along in a raging current.

“You cannot cross here,” the boy shouted at the top of his voice.  “You must go higher up where the water’s deeper.”

The wind swept his words away, but his gestures were understood.

“The boy is telling us to go higher up,” said one of the horsemen.

“I suppose he is,” the other replied; “but here is the ford.  You see the road we have travelled ends here, and I can see it again on the other side.  It is getting dark, and were we to cross higher up we might lose our way and get bogged; it is years since I was here.  What’s the boy going to do now?  Show us a place for crossing?”

The lad, on seeing the hesitation of the horsemen, had run along the bank up the stream, and to their surprise, when he had gone a little more than a hundred yards he dashed into the water.  For a time the water was shallow, and he waded out until he reached the edge of the regular bank of the river, and then swam out into the current.

“Go back,” the horseman shouted; but his voice did not reach the swimmer, who, in a few strokes, was in the full force of the stream, and was soon lost to the sight of the horsemen among the short foaming waves of the torrent.

“The boy will be drowned,” one of the horsemen said, spurring his horse up the valley; but in another minute the lad was seen breasting the calmer water just above the ford.

“You cannot cross here, Captain Hume,” he said, as he approached the horsemen.  “You must go nigh a mile up the river.”

“Why, who are you, lad?” the horseman asked, “and how do you know my name?”

“I’m the nephew of Nigel Graheme.  Seeing how deep the floods were I came out to show you the way, for the best horse in the world could not swim the Nith here now.”

“But this is the ford,” Captain Hume said.

“Yes, this is the ford in dry weather.  The bottom here is hard rock and easy to ride over when the river is but waist deep, but below and above this place it is covered with great boulders.  The water is six feet deep here now, and the horses would be carried down among the rocks, and would never get across.  A mile up the river is always deep, and though the current is strong there is nothing to prevent a bold horseman from swimming across.”

“I thank you heartily, young sir,” Captain Hume said.  “I can see how broken is the surface of the water, and doubt not that it would have fared hard with us had we attempted to swim across here.  In faith, Munro, we have had a narrow escape.”