WATER 



113 



Photograph "by Detroit Publishing Co. 



Fig. 43. Summit of Pike's -Peak, showing rock fragments split off 

 principally by alternating heat and cold. 



That it is present in the water is recognized by its 

 sweetened taste, and may also be shown by evaporating 

 the water, when the sugar again appears in the solid 

 form at the bottom of the vessel. Some substances that 

 are not dissolved in water may be held in suspension, 

 giving to the water the color of the substances thus 

 held. 



When starch and water are shaken together in a 

 tube, the starch does not dissolve, but its particles are 

 held in suspension, giving to the water a milky white 

 appearance. 



After every rain the water of the small streams is of 

 muddy color. This is due to the particles of soil the 



