Book:The Shepherd's Crown/Annotations
Doubleday hardback (UK), p10:
Tiffany notices young Feegle are following her on her rounds and collecting examples of the strongest substance known to man, toenail clippings from the elderly. It is not specified as to what they do with them, but she suspects some sort of weapon-use is involved. Later in the book crescent-shaped boomerangs are deployed as weapons.
Compare this to Pat O'Shea's fantasy novel Hounds of the Morrigan (Reading Suggestions) where the Celtic Irish war goddess Morrigan returns to Ireland. She/they (the Morrigan is a triple Goddess) uses her fingernails as a sort of boomerang-like ninja throwing stars. This is also in Irish mythology, apparently. Where fingernails are lethal projectile weapons.
Doubleday hardback (UK), p19:
Mephistopheles is a good name for a goat. Although perhaps not as fitting as "Baphomet".