...free paflage being thus given to the water, it defcends through К F, into the inferior canal, until the water in the lock is on a level with the water in the inferior canal В ; as reprefented, fig. 2. . Now, let it be required to raife the veflel L (fig. 2)...

...free paflage being thus given to the water, it defcends through К F, into the inferior canal, until the water in the lock is on a level with the water in the inferior canal В ; as reprefented, ig. 2. Now, let it be required to raife the veflel L (fig. 2.)...

...free passage being thus given to the water, it descends through KF, into the inferior canal, until the water in the lock is on a level with the water in the inferior canal В ; as represented, fig. 2. Now, let it be required to raise the vessel L (fig. 2.)...

...This is a lock. To raise a boat from the lower to the upper plane, this lock, or basin, is emptied when the water in the lock is on a level with the water in the canal below. The boat being then floated into the lock, the gate at the lower end is closed, and the gate at the upper...

...passing down a Canal, the upper gates are kept shut, and a sluice is opened in the lower gates, until the water in the Lock is on a level with the water in the lower parts of the Canal, when the boat easily glides out and passes on its way. Canals may be seen...

...gates of the lock being closed, the water from the canal is admitted to the lock by means of valves. When the water in the lock is on a level •with the water above, the valve's are closed, and the upper gates, or those next to the boat, are opened. The vessel...