The stuff of archaeology is the debris of yesterday.
Archaeology is the science of what has remained, for any rea- son at all, anyplace in the world, from any period of the past. The breadth of its concerns is virtually limitless, its raw material corre- spondingly wide-ranging: From stone tools, held in the strata at Olduvai Gorge, to a Roman villa in England, its buried foundation appearing as a pattern of "crop marks" in a wheat field; from butchered bones, found at the site of...