WATER 



99 



thermometer the freezing point is taken as thirty-two 

 degrees. 



If an apparatus is arranged such as is shown in Figure 

 96, it will be found that as the water in the flask is heated 



FIG. 95. Cutting Heavy Steel Plate with Oxy-acetylene 

 Flame. 



the water in the tube will move up, due to the expansion 

 of the water. If on the other hand the water in the 

 flask be cooled, the water in the tube will move down, 

 showing that the water in the flask is contracting. As 

 the water is further cooled the contraction oontinues 



