Loess Soils of the Transition Region 



31 



metric per cents are also shown, for comparison of the two 

 methods. The colorimetric per cents are set down according to 

 rank and the corresponding gravimetric results placed opposite. 

 The humus content of the individual fields as determined by 

 the colorimeter has been shown in previous tables. In the tables 

 on pages 11-33 c>f this thesis all of the humus per cents, except 

 those of the first and second feet, are the results of the colori- 

 metric method. Since gravimetric determinations were made 

 only on the first and second foot samples Table No. XVII will 



Table XVII. Comparison of Gravimetric and Colorimetric Humus 

 Determinations on Individual Fields 



Wauneta Area 



141 



