THE SO/L 



Alluvial Soil. Most of the soil which moves from one 

 place to another is carried by running water. Even the 

 clearest creeks and rivers always carry some of the land 

 with them. When there are 

 storms, a great deal of water 

 runs from the land, and the 

 soil carried with it makes 

 the stream muddy. 



In the mountains, rivers 

 run so rapidly that they can 

 carry not only mud, but 

 even large stones. When 

 they reach more level land, 

 where they flow more 

 slowly, the stones are left. 

 Lower down, where the 

 water runs still more slowly, 

 it loses the gravel ; and 

 then the sand falls to the 

 bottom. The finest par- 

 ticles of the soil are carried 

 on, and sink to the bottom 

 of the still water at the rivers' mouths. In this way 

 deltas are formed. 



Soil deposited from water is alluvial soil. Alluvial 

 soil is usually fine and uniform. It is provided with 

 all the foods of plants, and is easy to cultivate because it 

 is level. The level land near Manila Hay, and almost all 

 other level land in the Philippines, is alluvial. 



Stones in soil 



