Quotation from: The Beasts of Tarzan

Written by: Edgar Rice Burroughs

The blacks did not understand her words, but they saw the cause of
her trouble, and soon a young woman had pulled her into a hut and
with several others was doing her poor best to quiet the child and
allay its agony.

The witch doctor came and built a little fire before the infant,
upon which he boiled some strange concoction in a small earthen
pot, making weird passes above it and mumbling strange, monotonous
chants. Presently he dipped a zebra's tail into the brew, and
with further mutterings and incantations sprinkled a few drops of
the liquid over the baby's face.