On these new pages, the oldest lessons score themselves again. Spanish flu, bubonic plague; the Black Death as a jumble of bodies depicted in engravings— Leeches and lancets; purgation with smoke, fire, or water. Upside-down cadavers with dark tongues. You'd think by now we'd have learned something from mass graves and thinned populations. In the Cotswolds, remains of five mammoths from Neanderthal times have been unearthed from a gravel quarry along with evidence of snails and dung beetles. If not disease, then rot and ordinary time wage their battle. We dust the bones, turn their questions over in our hands.