branch of a certain tree which the public opinion of the ancients
identified with Virgil's Golden Bough?

The first point on which we fasten is the priest's title. Why was he
called the King of the Wood? Why was his office spoken of as a
kingdom?

The union of a royal title with priestly duties was common in
ancient Italy and Greece. At Rome and in other cities of Latium
there was a priest called the Sacrificial King or King of the Sacred
Rites, and his wife bore the title of Queen of the Sacred Rites. In
republican Athens the second annual magistrate of the state was
called the King, and his wife the Queen; the functions of both were
religious. Many other Greek democracies had titular kings, whose
duties, so far as they are known, seem to have been priestly, and to
have centered round the Common Hearth of the state. Some Greek
states had several of these titular kings, who held office
simultaneously. At Rome the tradition was that the Sacrificial King
had been appointed after the abolition of the monarchy in order to
offer the sacrifices which before had been offered by the kings. A
similar view as to the origin of the priestly kings appears to have
prevailed in Greece. In itself the opinion is not improbable, and it
is borne out by the example of Sparta, almost the only purely Greek
state which retained the kingly form of government in historical
times. For in Sparta all state sacrifices were offered by the kings
as descendants of the god. One of the two Spartan kings held the
priesthood of Zeus Lacedaemon, the other the priesthood of Heavenly
Zeus.

This combination of priestly functions with royal authority is