In the collection Scottish Charms and Amulets George Black recounts a variety of folk practices, many of which linger on not only in word but in material form. Amulets always draw interested audiences in museums where they are on display and bring together the traditions captured in words as charms with a tangible force. Arrowheads are one popular example.
As in many places, Black notes that 'the prehistoric flint arrowheads so numerous in Scotland were long considered by the peasantry to have fallen from the clouds, and to have been used as weapons by the fairies to shoot at human beings' and also especially cattle. Like the well-known Anglo-Saxon charm Wið færstice for elf-shot cattle, there were a variety of ways to battle the illnesses presumed to be caused by the folk too small to be seen.
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Rock on! (Pun, oh, I just noticed, cool.) Thanks!