CHAP. 32.—GEODES; THREE REMEDIES.
Geodes[1] is so called from its formation, it containing earth
within. It is remarkably beneficial for the eyes, and is used
for the cure of diseases of the testes and mamillæ.
1. "Earthy" stone. These are either nodules of iron-stone, hollow in
the centre, or else round, inorganic masses, hollow, and lined with crystals
within. These latter are mostly of a silicious nature.