Could anyone please enlighten me as to the exact meaning of the term 'hutch' in the context of 18th century water power? Also, was the term 'penstock' used at that time for just the trough immediately spilling onto a wheel, or might it be also used for a longer section of raised launder running from the dam to the wheel? Thanks! Tim -- Dr Tim Young MA PhD FGS FSA Email: [log in to unmask] Web: www.geoarch.co.uk Phone: 07802 413704 Fax: 08700 547366