64 Gracing. 



from the drives and roads, as seen in Fig. 28. The low, 

 raised mound -will form a good place for a shrubbery. 

 Supposing it is desirable to make the flat surface repre- 

 sented by the straight line in Fig. 29 into an undulated 

 surface represented by the dotted line in the same figure. 

 The difference in the level between A and B will be one 



FIG. 28.— HOW TO UTILIZE COIL EXCAVATED FF.CM A DRIVE FOR SLIGHT VARIATIONS 



OF THE GROUND. 



foot, yet we have only removed six inches of soil from A 

 to B ; the result is the little rounded hill at B and the 

 shallow dell at A. This effect may afterwards be consider- 

 ably heightened by means of judicious planting, as indi- 

 cated in the diagram. If we increase the depth of the 

 excavation, indicated in this figure, from six inches to six 

 feet, and the length from sixteen to two hundred feet, we 



FIG. 29.- SHOWING HOW TO FORM GENTLE UNDULATIONS CF THE GROUND. 



will have the same rolling surface on a much larger scale, 

 and the effect will be heightened. Instead of planting a few 

 dwarf, flowering plants on the little mound, we now have 

 the opportunity to plant a large and varied shrubbery on 

 the slope of a considerable hill. But while it would be per- 

 fectly safe to remove six inches of soil from A to B, if the 

 soil was of ordinary depth and fertility, by the removal 



