"Thin flat oolite stones, having a natural perforation, are found in
abundance on the Yorkshire coast. They are termed "witch stones," and
are tied to door keys, or suspended by a string behind the cottage door,
"to keep witches out." {89} "A thin flat perforated witch stone,"
answers to an uninscribed Arunta churinga; "a magic thing," and its use
survives in Britain, as in Yorkshire and Roxburghshire. We know no limit
to the persistence of survival of superstitious things, such as magic
stones. This is the familiar lesson of Anthropology and of Folk Lore,
and few will now deny the truth of the lesson.