"The lock C is a controllable compartment with raise-able and lower-able gates D and E. Since water always finds its level, by raising and lowering the gates, two separate water levels can be maintained and still provide water transportation through the lock." —Quackenbos 1859

Locks

"The lock C is a controllable compartment with raise-able and lower-able gates D and E. Since water…

"No matter what the size or shape of a body of water may be, its surface has the same level throughout." —Quackenbos 1859

Uniform Water Level

"No matter what the size or shape of a body of water may be, its surface has the same level throughout."…

"The pond is tapped with a pipe leading to two fountains and a home. The water provided by the pipe will extend upward in the home and fountains to the same level as the pond." —Quackenbos 1859

Tapped Water Level

"The pond is tapped with a pipe leading to two fountains and a home. The water provided by the pipe…