Glossary

Summerfield Hospital this used to be the Workhouse; the place where out-of-work men and their families had to go to live and work when they had no money
post-mill windmill which turned on a stout post, to catch the wind
survey to measure and study with great care
devices machines & methods of manufacture; Boulton was an inventor as well as a manufacturer & business-man
navigation in this case = canal
evaporation change of water into a gas, water vapour; drying-up
reservoir water storage pond or tank
top level summit level highest level part of a canal; it is kept as low as possible, so that reservoirs can be made on stream higher up to keep the level supplied, and to avoid the expense of many locks lock boat-sized part of the canal that can be closed by gates, filled and emptied, to raise or lower a boat to a different level
communications here it means quick and easy travel and carriage of materials and goods to other places
Savery engine early engine which wasted most of the steam power it produced
Watt's device the separate condenser; this prevented the waste of power in earlier steam engines; Watt brought his engine to Soho in 1774, and it proved to be able to do all that Boulton: had hoped, and helped to make our huge factory city possible
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