Brick Making from a Trade to an Art. PROGRESS OF THE NORTH RIVER TUNNEL. SECTION OF RE-ENFORCING FILLING OVER THE TOP OF THE TUNNEL. Government Note Paper. counteracted by a large overlying depth of solid ma terial. If the tunnel had but five feet of wet silt or lowing. A Volatile Compound of Iron. MEAN LOW WATER FRENCH LIPIESTEAMSHIP PIER c c THE EASTERN GRADE—SURMOUNTING THE ROCK., scientific american, 1891-07-18


Brick Making from a Trade to an Art. PROGRESS OF THE NORTH RIVER TUNNEL. SECTION OF RE-ENFORCING FILLING OVER THE TOP OF THE TUNNEL. Government Note Paper. counteracted by a large overlying depth of solid ma terial. If the tunnel had but five feet of wet silt or lowing. A Volatile Compound of Iron. MEAN LOW WATER FRENCH LIPIESTEAMSHIP PIER c c THE EASTERN GRADE—SURMOUNTING THE ROCK., scientific american, 1891-07-18


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