I remember my dad talking about this same thing storing eggs and I thought
he referred to it as isenglass or eisenglass I can't find either in the
dictionary, but under water glass it says a substance that consists usually
of the silicate of sodium, is found in commerce as a glassy mass, a stony
powder, or dissolved in water as a viscous syrupy liquid, and is used
especially as a cement, a protective coating, and as a fireproofing agent.
I remember he said as a kid it was his job to fetch eggs when his mom needed
them and he hated to reach into the barrel because of the feel of the