| Description | On the same sheet: Memorandum. Experiments made at the West Middlesex Water Works. 24 Apr. 1825. Docketed “West Middlesex propose engine. Experiments on pressure on pumps. Some alteration in mains. 64 inch, 8 foot stroke preferred. Proposed new pumps for the present engines, estimate wanted. Time for new engine 15 to 18 months or less if 64 inch on hand is used.” |