They just struck the spot which the boy had indicated.

He had already arrived there, and, without a word, trotted forward.
It was soon dark, and the horsemen were obliged to keep close to his heels to see his figure.

It was as much as they could do to keep up with him, for the ground was rough and broken, sometimes swampy, sometimes strewn with boulders.
"It is well we have a guide," Colonel Munro said to his companion; "for assuredly, even had we got safely across the stream, we should never have found our way across such a country as this.

Scotland is a fine country, Hume, a grand country, and we are all proud of it, you know, but for campaigning, give me the plains of Germany; while, as for your weather here, it is only fit for a water rat." Hume laughed at this outburst.
"I sha'n't be sorry, Munro, for a change of dry clothes and a corner by a fire; but we must be nearly there now if I remember right.

Graheme's hold is about three miles from the Nith." The boy presently gave a loud shout, and a minute later lights were seen ahead, and in two or three minutes the horsemen drew up at a door beside which two men were standing with torches; another strolled out as they stopped.
"Welcome, Hume! I am glad indeed to see you; and--ah! is it you, Munro?
it is long indeed since we met." "That is it, Graheme; it is twelve years since we were students together at St.Andrews." "I did not think you would have come on such a night," Graheme said.
"I doubt that we should have come tonight, or any other night, Nigel, if it had not been that that brave boy who calls you uncle swam across the Nith to show us the best way to cross.