The photocell banks which protected us form the heat of Mercury’s sun were badly damaged. We needed selenium to repair them, so we sent Speedy to a selenium got to bring us some selenium. Hours ago , Speedy still hadn’t returned, so we going to go after Speedy on the sunside from the first Expedition. They couldn’t move without human control, so we rode them through the tunnels of the mining station to an exit which was five kilometers from the selenium pool. We went up the station and stood in the shadow of a tall cliff, where the temperature was eighty centigrade. We saw Speedy ran towards us, but when we called Speedy, he turned and ran away, singing.