ROOTS 



89 



.Flowerpot 

 'Seedling 



-Soil 

 Box 

 .Water 



78. ROOTS 

 Object. Same as in Experiment 76. 



Method. Prepare a box of soil in the center of which is 

 placed an ordinary porous flowerpot having the hole in the 

 bottom closed with a cork, 

 and filled with water. 



Plant seeds in soil a few 

 inches from the flowerpot. 

 The only moisture in the 

 soil is what comes through 

 the pores of the flowerpot. 



After three or four days carefully remove a seedling and 

 note the direction in which it has grown. 



Query. Downward growth in ordinary earth is prob- 

 ably due to what? 



79. ROOTS 

 Object. Same as in Experiment 76. 



Method Arrange a cone of wood or a funnel as in 

 Figure 29. Fill the funnel with wax or paraffin and cover it 



with a layer of blotting 

 ^...seedlings 



}..ist. position, 

 snd. 



position 



L Blotting paper 



Jar 



.... ..Water 



FIG. 29. 



paper. If the cone is of 

 wood or wax, the paper 

 may be fastened with a 

 pin or thumb tack. 



Stand the cone in a ves- 

 sel of water so that the 

 lower edge of the blot- 

 ting paper will be below 

 the surface of the water, 

 in order that the whole 

 paper maybe kept moist. 



