e necessity of sacrificing his child. Meanwhile the Greek hosts,
impatient of delay, clamour for the victim, and are only appeased by the
assurance of Calchas that the sacrifice shall take place that very day.
Left alone with Agamemnon, Calchas entreats him to submit to the will of
the gods. Agamemnon, torn by conflicting emotions, at first refuses, but
afterwards, relying upon the message which he has sent to his wife and
daughter, promises that if Iphigenia sets foot in Aulis he will give her
up to death. He has hardly spoken the words when shouts of joy announce
the arrival of Clytemnestra and Iphigenia. The message has miscarried,
and they are already in the camp. As a last resource Agamemnon now tells
Clytemnestra that Achilles, the lover of her daughter, is false, hoping
that this will drive her from the camp. Clytemnestra calls upon
Iphigenia to thrust her betrayer from her bosom, and Iphigenia replies
so heroically that it seems as though Agamemnon's plot to save his
daughter's life might actually succeed. Unfortunately Achilles himself
appears, and, after a scene of reproach and recrimination, succeeds in
dispelling Iphigenia's doubts and winning her to complete
reconciliation.

The second act begins with the rejoicings over the marriage of
Iphigenia. The general joy is turned to lamentation by the discovery of
Agamemnon's vow and the impending doom of Iphigenia. Clytemnestra
passionately entreats Achilles to save her daughter, which he promises
to do, though Iphigenia professes herself ready to obey her father. In
the following scene Achilles meets Agamemnon, and, after a long
altercation, swears to defend Iphigenia with the last drop of his blood.
He rushes off, and Agamemnon is left in anguish to weigh his love for
his daughter against his dread of the angry gods, Love triumphs and he
sends Areas, his attendant, to bid Clytemnestra fly with Iphigenia home
to Mycenae.

In the third act the Greeks are angrily demanding their victim. Achilles
prays Iphigenia to fly with him, but she is constant to her idea of
duty, and bids him a pathetic farewell. Achilles, however, is not to be
persuaded, and in an access of noble rage swears to slay the priest upon
the steps of the altar rather than submit to the sacrifice of his love.
After another farewell scene with her mother Iphigenia is led off, while
Clytemnestra, seeing in imagination her daughter under the knife of the
priest, bursts forth into passionate blasphemy