Robin Lyth had chosen well his place for meeting Mary. The lane (of which he knew every yard as well as he knew the rocks themselves) was deep and winding, and fringed with bushes, so that an active and keen-eyed man might leap into thicket almost before there was a fair chance of shooting him. He knew well enough that he might trust Mary; but he never could be sure that the bold “coast-riders,” despairing by this time of catching him at sea, and longing for the weight of gold put upon his head, might not be setting privy snares to catch him in his walks abroad. They had done so when they pursued him up the Dike; and though he was inclined to doubt the strict legality of that proceeding, he could not see his way to a fair discussion of it, in case of their putting a bullet through him. And this consideration made him careful. The brother and sister went on well by the foot-path over the uplands of the farm, and crossing the neck of the Flamburn peninsula, tripped away merrily northward. The wheat looked healthy, and the barley also, and a four-acre patch of potatoes smelled sweetly (for the breeze of them was pleasant in their wholesome days), and Willie, having overworked his brain, according to his own account of it, strode along loftily before his sister, casting over his shoulder an eddy of some large ideas with which he had been visited before she interrupted him. But as nothing ever came of them, they need not here be stated. From a practical point of view, however, as they both had to live upon the profits of the farm, it pleased them to observe what a difference there was when they had surmounted the chine and began to descend toward the north upon other people's land. Here all was damp and cold and slow; and chalk looked slimy instead of being clean; and shadowy places had an oozy cast; and trees (wherever they could stand) were facing the east with wrinkled visage, and the west with wiry beards. Willie (who had, among other great inventions, a scheme for improvement of the climate) was reminded at once of all the things he meant to do in that way; and making, as he always did, a great point of getting observations first--a point whereon he stuck fast mainly--without any time for delay he applied himself to a rapid study of the subject. He found some things just like other things which he had seen in Scotland, yet differing so as to prove, more clearly than even their resemblance did, the value of his discovery. “Look!” he cried; “can anything be clearer? The cause of all these evils is not (as an ignorant person might suppose) the want of sunshine, or too much wet, but an inadequate movement of the air--” “Why, I thought it was always blowing up here. The very last time I came, my bonnet strings were split.”