“Indeed? I wish you joy, sir.”

Thereupon Edgar took the slate and wrote:—

“Thank you, Joe. Now, I leave you in charge. Keep a sharp eye on the men—especially on that lazy fellow who has a tendency to sleep and shirk duty. If the rock in the fair-way is got ready before my return, blast it at once, without waiting for me. You will find one of Siebe and Gorman’s voltaic batteries in my lodging, also a frictional electrical machine, which you can use if you prefer it. In the store there is a large supply of tin-cases for gunpowder and compressed gun-cotton charges. There also you will find one of Heinke and Davis’s magneto-electric exploders. I leave it entirely to your own judgment which apparatus to use. All sorts are admirable in their way; quite fresh, and in good working order. Have you anything to say to me before I go?”

“All right, sir,” replied Joe, in his sprawly hand; “I’ll attend to orders. When do you start, and when do you expect to be back?”

“I start immediately. The day of my return is uncertain, but I’ll write to you.”

Rubbing this out, Joe wrote:—

“You’ll p’r’aps see my old ’ooman, sir. If you do, just give her my respects, an’ say the last pair o’ divin’ drawers she knitted for me was fust-rate. Tightish, if anything, round the waist, but a bit o’ rope-yarn putt that all right—they’re warm an’ comfortable. Good-bye, I wish you joy again, sir.”

“Good-bye,” replied Edgar.

It was impossible that our hero could follow his inclination, and nod with his stiff-necked iron head-piece at parting. He therefore made the motion of kissing his hand to his trusty man, and giving the requisite signal, spread his arms like a pair of wings, and flew up to the realms of light!

Joe grinned broadly, and made the motion of kissing his hand to the ponderous soles of his employer’s leaden boots as they passed him, then, turning to the granite masonry at his side, he bent down and resumed his work.