AGRICULTURE 



THROUGH THE LABORATORY 

 AND SCHOOL GARDEN. 



2 3" 6 <? ^ 



OUTLINE OF CHAPTER I. 



NATURE AND FORMATION OF SOILS. 



.4. SOURCES OF ENERGY. 

 I. The Earth's Energy. 

 II. The Sun's Energy. 



,5. FACTORS OF SOIL FORMATION. 



I. The Atmosphere. 



1. // Regulates the Temperature. 



2. Movements of the Atmosphere. 



3. Chemical Action, EXPERIMENT i. 



4. Alternations of Heat and Cold. 



II. Water. 



1. Chemical action. 



2. Mechanical Action. Disintegrating, transporting, 



assorting. EXPERIMENT 2. 



(1) RIVERS. EXPERIMENT 3. 



(2) UNDERGROUND STREAMS. 



(3) LANDSLIDES. 



(4) LAKES. 



(5) THE OCEAN. 



(6) FROST. 



