He thought of the thousands of Internationals in the Spacer’s hold, and his head ached with the sustained effort. It was a little thing that gave him the clue, the intense pain at the base of his brain was like a constant hammering, and Mark considered an infinitesimal dose of Vanadol. Pacers Am I Next Shirt It would banish the pain as if by magic. “Vanadol!” He exclaimed electrified. “By Io, Vanadol is the answer! How much Vanadol have we got aboard? Palanth, search the medical stores and find how much of the stuff we’ve brought along … hurry!” Mark’s eyes were sparkling, green as emeralds.