CONSTITUTION OF WATER. 



73 



portion of water in this little vessel, c, and be- 

 sides the water there are two plates of the metal 

 platinum, which are connected with the wires 

 (A and B) coming outside, and I want to 



Fig. 24. 



examine that water, and the state and the 

 condition in which its particles are arranged. 

 If I were to apply heat to it you know what we 

 should get, it would assume the state of vapour, 

 but it would nevertheless remain water, and 

 would returo to the liquid state as soon as the 

 heat was removed. Now by means of these 

 wires (which are connected with the battery 

 behind me, and come under the floor and up 

 through the table) we shall have a certain 



