If it is on your whiskers it is top-soil, if on your boots sub-soil.
This whole village was covered by several feet of top-soil in which were found numerous interments of Anglo-Saxon date.
The subsoil here was a hard chalk, and the top-soil a sandy clay, the latter averaging from seven to ten feet in thickness.
A thin layer of sand covered with the top-soil brought up the level to about that of the rest of the knoll.
If the top-soil is used it is deposited on the sand in the required quantity and is remixed in place to insure uniformity.
Villagers could no longer use the top-soil of the hills as fertilizer, or the trees as firewood and building material.
If the top-soil is not eroded away a new forest can be produced in Virginia in thirty or forty years.
Top-soil and sub-soil can easily be distinguished in the following way.
Then we shoveled away the top-soil and heaped it up for future use.