Lavender was ill at ease. He followed his guide mechanically as they made their way, in zigzag fashion, down the precipitous slopes and over slippery plateaus; and when at last he came in sight of the mighty arch, the long cavern, and the glimmer of sea and shore that could be seen through it, he began to put down the outlines of the picture as rapidly as possible, but with little interest in the matter. Ingram was sitting on the bare rocks beside him, Mackenzie was some distance off--should he tell his friend of what Sheila had said in the morning? Strict honesty, perhaps, demanded as much, but the temptation to say nothing was great. For it was evident that Ingram was now well inclined to the project, and would do his best to help it on; whereas, if once he knew that Sheila had resolved against it, he, too, might take some sudden step--such as insisting on their immediate return to the midland--which would settle the matter forever. Sheila had said she would herself make the necessary explanation to Ingram, but she had not done so: perhaps she might lack the courage or an opportunity to do so, and in the meantime was not the interval altogether favorable to his chances? Doubtless she was a little frightened at first. She would soon get less timid, and would relent and revoke her decision of the morning. He would not, at present at any rate, say anything to Ingram. But when they had got up again to the summit of the rocks, an incident occurred that considerably startled him out of these vague and anxious speculations. He walked straight over to the sheltered spot in which Sheila was waiting. The rushing of the wind doubtless drowned the sound of his footsteps, so that he came on her unawares; and on seeing him she rose suddenly from the rock on which she had been sitting, with some effort to hide her face away from him. But he had caught a glimpse of something in her eyes that filled him with remorse. “Sheila,” he said, going forward to her, “what is the matter? What are you unhappy about?” She could not answer; she held her face turned from him and cast down; and then, seeing her father and Ingram in the distance, she set out to follow them to the lighthouse. Lavender walking by her side, and wondering how he could deal with the distress that was only too clearly written on her face. “I know it is I who have grieved you,” he said in a low voice, “and I am very sorry. But if you will tell me what I can do to remove this unhappiness I will do it now. Shall I consider our talking together of last night as if it had not taken place at all?” “Yes,” she said in as low a voice, but clear and sad, and determined in its tone. “And I shall speak no more to you about this affair until I go away altogether?” And again she signified her assent, gravely and firmly. “And then,” he said, “you will soon forget all about it, for, of course, I shall never come back to Lewis again.” “Never?”