Mounted on wheels, the instruments consisted of a small cart with twin panels and a confusing array of dials. Above each machine was a helix of tightly wound silver wire. At the bottom was a transparent globe still half-filled with a thick greenish liquid.
"According to Ga-Marr," Thalia said, "these machines were used by the early Sirians for medical purposes. They found in the principal of applied hypnosis a cure for a great many ills."
Standish nodded. Without further word, he took up a small wrench and removed the panel from one of the instruments, carefully examining the revealed wiring.
"They seemed to be constructed for use on ordinary electric power. But not the power supplied by Calthedra's dynamoes. I'll have to step up the frequency."
He opened a wall switchboard and quickly
