"With the introduction of the haunting tones of the wind reed, a flutelike instrument made of the hollow leg bone of a crane, Ayla was suddenly reminded of the eerie spiritual voice of Ursus, the Great Cave Bear, from the Clan Gathering."
"First Ayla had cut off the heavy mane close to the skin with a sharp knife, then she beamed it; draped it over a large smooth mammoth leg bone and scraped it, using the slightly dulled edge of a flint flake."
"Trimble had been dogged by camp erysipelas and later by what probably was osteomyelitis of the leg bone that had sustained a compound fracture."