hes south of the south side of 67th street, at of 5 feet 6 inches. At the grade line, the offset of 6 inches, the beam tunnel, 24 feet 9 inches south of the south side of which point the opening in the beam tunnel ends, the face of back and front, again occurs, giving them a thickness of 4 67th… … Fig. 12. THE UNDERGROUND RAILWAY IN NEW TORE-CROSS SECTIONS OF THE MASONRY TUNNELS. ing. Some idea of the excellence of tin- work may be formed inches north of the north side of 71st street. By reference I with a batter on each face of about i of an inch to the foot, from the following fact:…
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