| WHEEL. +------------------------+----------------+------------------ | |Diameter of | Projected |Cost per | in | Mile. | operation. | Plant. | progress. | ------------------------+-------------+--------------+-------------+-------- | Miles. | £ | | |revolutions. | | | | | |Depth of | | | | | | Dewit Clinton| 230|28 |5·5 |21 |13·7|36 |1 |65 | -- | +----+----+----+----+----+---+--+----+----+----+-----+ Averages | 200|26 |5·6 |24·8|11 |30.