WATER GAUGE. 



393 



the water. The line, which is of strong gimp, is attached to the corks 

 and runs along on the top of a number of posts, 25 to 35 yards apart, 

 through pulleys. It is also attached to the index plate which rises and 

 falls on the dial in response to the rise and fall of the corks in the box 

 at the riverside. The dial is placed within sight of the windows of your 

 residence. 



WATER GAUGE. 



The box is about 12 feet in length, the inside measurement of which 

 is 12 inches square. It can be put in the water and fixed to the bank ; or 

 a hole can be made in the bank for it, and a gully containing a pipe made 

 tor the connection. In either case, a hole should be made, so that the box 

 is a little lower than " dead low water " when fixed. The pieces of cork 

 are four in number, 9 inches square and 3 inches thick. These fit on the 

 op of one another, and are fixed together, and weighted at the bottom 



