SUBWAYS 328
Introduction--Capitol Hill Tunnel, Pennsylvania R. R., Washington, D.
C.--Constructing Side Walls in Relining Mullan Tunnel--Lining a Short
Tunnel, Peekskill, N. Y.--Cascade Tunnel Great Northern Ry.--Relining
Hodges Pass Tunnel, Oregon Short Line Ry.--Lining a 4,000-ft.
Tunnel--Method of Mixing and Placing Concrete for a Tunnel
Lining--Gunnison Tunnel--New York Rapid Transit Subway--Traveling Forms
for Lining New York Rapid Transit Railway Tunnels--Subway Lining, Long
Island R. R., Brooklyn, N. Y.