CHAPTER XV THE LAD WITH THE SILVER BUTTON: THROUGH THE ISLE OF MULL–––––––– The Ross of Mull, which I had now got upon, was rugged and trackless, like the isle I had just left; being all bog, and brier, and big stone. There may be roads for them that know that country well; but for my part I had no better guide than my own nose, and no other landmark than Ben More. I aimed as well as I could for the smoke I had seen so often from the island; and with all my great weariness and the difficulty of the way came upon the house in the bottom of a little hollow about five or six at night. It was low and longish, roofed with turf and built of unmortared stones; and on a mound in front of it, an old gentleman sat smoking his pipe in the sun. With what little English he had, he gave me to underst