This is a little box, generally made of ivory, of such a shape as to
hang from the belt. It is used for the purpose of holding the grease,
which some archers use to anoint the string and their shooting-glove
with, so as to get a better loose. The advantage of it is a matter of
opinion, and so it may remain; if used too freely, however, it causes
the bow-string to unravel.