Amphitryon then comes out of the palace, and loosens his chains. Later on Theseus arrives, and uncovers his face and helps him to rise. He then descends to the stage, and the ekkyklema is rolled back into the palace. Lastly, in the Electra of Euripides, the bodies of Aegisthus and Clytaemnestra are shown to the audience by means of this device.[623] The ekkyklema is also occasionally used in Comedy. Aristophanes, on two occasions, employs it in a burlesque sort of way, when he is introducing tragic poets on the stage. In the Thesmophoriazusae, Euripides and Mnesilochus call at the house of Agathon to borrow some female clothing. Agathon is rolled out on the ekkyklema, lends them some articles which are brought to him from inside the house, and then, when he is tired of their importunity, orders himself to be ‘rolled in again as fast as possible’. In the Acharnians Dicaeopolis goes to the house of Euripides to borrow a tragic dress. Euripides is upstairs in his study writing tragedies, and cannot come down, but allows himself to be rolled out, and supplies the necessary dresses.[624] These two passages in Aristophanes, where the mechanism of the apparatus is carefully emphasized in order to add to the ridicule, are very valuable as evidence concerning the structure of the ekkyklema. The device is also used in the Clouds to show the inside of the phrontisterion. The disciples of Socrates are seen hard at work on their studies, with globes, diagrams, black-boards, and other scholastic materials round about them. In the Knights, when the Propylaea is thrown open, and reveals a vision of ancient Athens, with Demos dressed up in the antique style, the spectacle may possibly have been produced by means of the ekkyklema.[625]