The difficulty will be to persuade the people on the other side that we are whites." "How far do you think the sea lies on the other side of this range of giant mountains ?" Tom asked.
"I have no idea," Ned replied, "and I do not suppose that anyone else has.

The Spaniards keep all matters connected with this coast a mystery; but I believe that the sea cannot be many days' march beyond the mountains." For an hour or two they chatted quietly, their thoughts naturally turning again to England, and the scenes of their boyhood.
"Will it be necessary to watch, think you ?" Tom asked.
"I think it would be safer, Tom.

One never knows.

I believe that we are now beyond the range of the natives of the Pampas.

They evidently have a fear of approaching the hills; but that only shows that the natives from the other side come down over here.