S8 



THE PHYSICAL PROPERTIES OF SOILS 



EVAPORI METERS 

 Apparatus used for comparing the loss of moisture from different 



soils by evaporation 



Tabulate the results and compare the rate of evapora- 

 tion from the different soils with each other and with 

 that from the water-free surface. 



Discuss the effect of texture upon the rate of 

 evaporation, and plot curves to represent the rate of 

 evaporation from each soil. 



References : 



Burkett, ''Soils," p. i66. 

 Fletcher, "Soils," pp. 88, 89. 

 Wiley, "Agricultural Analysis," Vol. I., pp. 

 160, 161. 



