“Galalith” is a coinage from the Greek words
for milk, gala, and stone, lithos.
In the U.K. this plastic was named Erinoid,
the name of the company in England that manufactured it.
Erinold was sold as a non-inflammable substitute for
celluloid, bone, amber, ebonite, horn, coral,
ivory, jet, vulcanite, tortoiseshell, and turquoise,
and an insulating material.
See also in The book of science:
Readings on wikipedia: