This section is from the book "Beautiful Gardens - How To Make Them And Maintain Them", by Walter P. Wright. Also available from Amazon: Beautiful Gardens: How To Make And Maintain Them.
If it is wise to utter a warning against unnecessary drainage, it is still more so to sound a note of caution with respect to shifting soil. It is not indispensable to level every mound and fill up every hollow in a garden. A natural knoll may be taken advantage of for a clump of shrubs or trees. A hollow may be turned into a pretty dell. A careful preliminary study of the natural configuration of a piece of ground would often save the garden maker from costly mistakes. Rubbish from the footings of a new building may form the base of a rockery near by, and the top soil will furnish the covering for it. Let them be carted straight from the ground and laid in separate heaps as near as possible to the place where they will ultimately be required; the way will then be clear for both builder and gardener. The cost of moving earth is usually one shilling per cubic yard, which is equal to an ordinary cartload. If the earth has to be taken away to a distance the cost must necessarily increase.