162 CHILDREN'S GARDENS 



Soils, Prof. F. H. King. 



Irrigation and Drainage, Prof. F. H. King. 

 Physics of Agriculture, Prof. F. H. King. 



Principles of Fruit Growing, L. H. Bailey. 

 Fertilizers, Voorhees. 



Experiments. A quantity of garden loam, spread 

 out thin and dried in the house for several days. 



1. Use the sieves to sort it, and show the different- 

 sized particles it is made up of. 



2. Scales two flowerpots of equal weight dry 

 garden loam. 



Put the same weight of dry soil in each pot. 

 .Leave one pot dry. Stand the other pot in a measured 

 quantity of water. Note the capillary rise of water 

 through the pot and soil. When the surface of the 

 soil is thoroughly damp, weigh the wet pot and note 

 how much weight of water it has taken up. Measure 

 the remaining water and note what bulk of water it 

 has taken up. 



Sandy loam will take up water, in bulk equal to 2-3 

 of itself in weight equal to 1-3 of itself. 



If the experiment is made with soil from the Chil- 

 dren's Garden, it will furnish a good problem in arith- 

 metic, to find out how much water their garden needs 

 to wet the soil to different depths. 



For instance, if they find their soil takes up J/2 

 its own bulk of water, every surface square foot to 

 one foot deep will need six inches depth of water. 



