Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 778
SECTION THROUGH THE RIVER, SHOWING THE COlKSl;OF 0.\E OF THE TUNNELS. out.l)ed … FIG. 4. aj concreie craUie METHOD OF DRIVING A TUNNEL WHEN THE RGIS IN SAND AND THE FLOOR IN ROCK. cap over the end of the tunnel lining and natu-rally must be larger in diameter, so the tunnellining makes a loose fit in the hole cut by theshield. Now you d never suppose that would Three men blown…
Children's literature
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![An illustration from St. Nicholas [serial], 1873, leaf 778](https://img.insideoutlibrary.com/img/1024/ia-stnicholasserial4321dodg-778-991.webp)
