[Observations on the Evaporation of Water].

Abstract

would, by the use of these Lifts, be carried fiom the lowest to thc highest level of the canal a quantity of water equal to the loads passed down.Mr. Green stated, in reply to several questions, that in some parts of the canal it had been found impracticable to get a sufficient drain to empty the chamber-they were compelled therefore to use a half lock of l8 inches' fall ; that there were seven lifts and one inclined plane on the canal, effecting a rise of 262 feet in eleven miles.