5/8. John Cary 's "Inland Navigation" (1796). By the end of the 18th century, canals traversed every part of Britain - and all of them had to be mapped. John Cary 's surveys were comprehensive and geographically precise, but the network they charted has now largely disappeared. So when
Nicholas Crane goes looking for Cary's routes through the Black Country, he's faced with a lot of detective work - not to mention some serious walking.
Series producer/Director Michael Waterhouse