The man whirled and started on a staggering run along the rim of the caliche he had been travelling.
Should he bear to right or left in circling the edge of the caliche on his hunt for the footprints?
Hence, roads are referred to as clay, gumbo, sandy or caliche roads as local custom may elect.
And if the road passed over the caliche flat thered be wheel marks; that was sure.
caliche is a reddish-brown to white layer found in many desert soils.
The caliche varies in thickness from a few inches to 10 or 12 feet, and rests on a soft stratum of earth called cova.
The caliche, or raw nitrate of soda, is not equally distributed over the pampas.
The caliche is then separated by means of picks from the overlying costra and carried to the refinery.
All this is the result of digging for caliche, and blasting it out of the sandy bed in which it has lain God only knows how long.
Undoubtedly this is what will ultimately take place, when the richer quality of the caliche has been exhausted.