Lessons on Water. 107 



that comes from our breath ? What form is in the well ? 

 Tell me some other forms of water. Fog, snow, cloud, 

 hail, rain. 



III. 



Catch snowflakes on a piece of black cloth, and examine 

 with a glass. Draw all the different forms you can find. 

 Darken the room and put a thin piece of ice over a hole in 

 the shutter, so that the sunlight can pass through. Now 

 look with the glass. What do you see ? Are these crystals 

 like snow crystals ? How do they differ ? Get a sheet of 

 ice from some little brook or puddle where the water has 

 gone down after the ice was frozen. Examine the beauti- 

 ful crystals on the under side. Examine crystals forming 

 on a cold window. Examine the steam as it issues from a 

 teakettle. Is it white just where it leaves the spout? 

 Why not ? 



IV. Properties of Water. 



1. Take a spoonful of sugar and place it in a cup of cold 

 water. Stir it a second and pour off the water. Is all the 

 sugar there ? Where has the rest of it gone ? Taste it. 

 Do you taste the sugar ? What has the water done to the 

 sugar ? Take a spoonful of sugar and put it in a cup of 

 hot water. Stir it also one second, and pour off as before. 

 Where is the sugar now ? Does hot water dissolve sugar 

 more or less rapidly than cold water ? Water dissolves 

 substances put into it. 



2. Place thermometer in freezing water. At what tem- 

 perature does it freeze ? 



3. Place thermometer in boiling water. At what temper- 

 ature does it boil ? 



4. Place a small dish of water out of doors on a cold 

 night ; next day get it and see what has occurred. Why 

 did the dish break ? Why did the ice bulge ? What does 

 water do, then, in freezing ? It expands. 



5. Hold up a glass of water. Look through it. De- 

 scribe it. 



