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Rh Just then I became aware that Signor Davelli's eyes were off me and that he was talking to Jack: his manner to him was quite courteous and gracious. He was, as it seemed, apologising to him.

"You must pardon me," said he; "I am afraid that my interest in your friend's conversation has diverted my attention unduly from my other guest." Then, after a slight pause, he added, "Now I propose to take your friend to-morrow on an aerial journey, to see the other extremity of the valley, and some of the operations there. I can only take one at a time: you will probably like to come again. But, for to-morrow, how shall we provide for your amusement? we shall be back early in the afternoon."

Jack replied civilly, but with an air of indifference which I thought was feigned, "I should be glad of an opportunity of examining some of the curious engines that we have seen yonder." He pointed as he spoke in the direction of the platform.

"Very well," was the reply; "I will see that you have a guide." As he spoke he took an odd-looking little instrument from a pocket at his girdle, and whistled upon it. The resulting sound consisted of a few recurring notes, with a wild, odd strain of music in them.