Mercury (Hermes) was the son of Jupiter and Maia. He presided over
commerce, wrestling, and other gymnastic exercises, even over
thieving, and everything, in short, which required skill and
dexterity. He was the messenger of Jupiter, and wore a winged cap
and winged shoes. He bore in his hand a rod entwined with two
serpents, called the caduceus.

Mercury is said to have invented the lyre. He found, one day, a
tortoise, of which he took the shell, made holes in the opposite
edges of it, and drew cords of linen through them, and the
instrument was complete. The cords were nine, in honor of the nine
Muses. Mercury gave the lyre to Apollo, and received from him in
exchange the caduceus.

[Footnote: From this origin of the instrument, the word "shell" is
often used as synonymous with "lyre," and figuratively for music
and poetry. Thus Gray, in his ode on the "Progress of Poesy,"
says:

"O Sovereign of the willing Soul,
Parent of sweet and solemn-breathing airs,
Enchanting shell! the sullen Cares
And frantic Passions hear thy soft control."]

Ceres (Demeter) was the daughter of Saturn and Rhea. She had a
daughter named Proserpine (Persephone), who became the wife of
Pluto, and queen of the realms of the dead. Ceres presided over
agriculture.

Bacchus (Dionysus), the god of wine, was the son of Jupiter and