The Diver ſhall walk at the bottom of the Thames; the Saltpeter-Maker ſhall Build Tom T---ds Pond into Houſes; the Engineers Build Models and Windmills to draw Water, till Funds are rais’d to carry it on, by Men who have more Money than Brains, and then good night Patent and Invention; the Projector has done his buſineſs, and is gone.