ss than year to year until the patience of the public has become woll the river ; Fig. 2, one of the entrances ; Fig. 8, a cross section, half the quantity used in ordinary furnaces. The cost of the nigh exhausted, and the demand is general that some surer and Fig. 4 the construction of a portion… … MODE OF TUNNELING RIVERS. ith the materials to be melted, and we understand that preliminary surveys are now in pro- any expansion and contraction. Our opinion ia that if tho —__ oe APPLICATIONS OF PAPER, bridge to be constructed will probably be a suspension bridge, ly stronger and could also be…
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