the earliest in Europe, [364];
the first under the Alps, [366];
canal tunnels, [368];
Highgate, [369];
length of, in Great Britain, [370];
the chief enumerated, [371];
cost, [375];
the Thames Tunnel, [376];
tunnels in France, [377];
the earliest in Europe, [364];
the first under the Alps, [366];
canal tunnels, [368];
Highgate, [369];
length of, in Great Britain, [370];
the chief enumerated, [371];
cost, [375];
the Thames Tunnel, [376];
tunnels in France, [377];