WATER. V, 



34. Water is a liquid. 



a. A liquid has no shape, but its surface is al- 



ways flat. 



Experiment 43. The level. 



b. Liquids flow and break into drops. 



Experiment 44. "Water seeks its own 

 level." Size of drops. 



35. Water can pass into some things, 



a. Porous bodies and how they may be 

 changed. 



Experiment 45. Porous bodies' absorb 



water. 



Experiment 46. To make porous' bodies 

 waterproof. (See Section 74.) 



b. Filters nature's and man^s. 



Experiment 47. Filtration, 



36. Solution. 



a. Water as a solvent. 



Experiment 48. Solution and its* oddities', 



b. Other solvents. (See Sections 75 and 76.) 



Experiment 49.The use of alcohol and 

 gasolene as solvents, 



37. Crystals. 



a. From solution. 



Experiment 50. Crystallization. 



b. Some crystals as they occur in nature 



38. Water for drinking. 



a. Importance of pure water. 



b. The advantage of drinking- considerable 

 water. 



c. HarmiM drinks :: atfcofool, coffee, and tea, 



