368 



SOIL PHYSICS AND MANAGEMENT 



differs from the guide row and level bench in that the lines are not 

 level, but are run across the slope with a grade of six to ten inches 

 in 100 feet towards some natural outlet into which the water may 

 drain. The terrace is made by plowing several furrows along the 



Fio. 181. Locusts growing on eiillied land. The gullies have been almost completely 



filled. (Heaton.) 



surveyed line and pulling the soil to the lower side so as to form 

 a low dyke or ridge with a shallow depression just above it. The 

 crop is planted obliquely over the dyke and terrace, so that water 

 may collect along the rows and be conducted into this depression, 



