Valve, 67. Pneumatic tyres, 341. Poldhu, signalling station at, 138. Points, railway, 208, _210_; and signals in combination--Working the block _backwards.
|Cost per | in | Mile. | operation. | Plant. | progress. | ------------------------+-------------+--------------+-------------+-------- | Miles. | £ | | | | including Virginia, the | | | including Mississippi, | | Ohio, Michigan, Indiana,| | | including Mississippi, | | | | | |cylinder. | |Length. | |Length of.