"Klim thinks Albert is beginning to look puny again," Cusat announced. "Probably nothing much to it, but how about coming along and helping us diagnose?"

The Group's three top biologists adjourned to the ship, with Muscles, whose preferred field was almost-pure mathematics, trailing along just for company. They found Albert II quiescent in vitro—as close a thing to a self-restoring six-foot sirloin steak as ever had been developed.

"He's quit assimilating, and he's even a shade off-color," Klim pointed out, a little anxiously.

They debated his requirements at some length. As a menu staple, Albert was hard to beat, but unfortunately he was rather dainty in his demands. Chemical balances, temperatures, radiations, flows of stimulant, and nutritive currents—all had to be just so; and his notions of what was just so were subject to change without notice. If they weren't catered to regardless, he languished and within the week perversely died. At least, the particular section of him that was here would die. As an institution, of course, he might go on growing and nourishing his Central Government clients immortally. Muscles might have been of help in working out the delicate calculations involved in solving Albert's current problems, but when they looked round for him, they found him blinking at a steady flow of invisible symbols over one wall of the tank room, while his lips moved in a rapid, low muttering; and they knew better than to interrupt. He had gone off on impromptu calculations of his own, from which he would emerge eventually with some useful bit of information or other, though ten to one it would have nothing to do with Albert. Meanwhile, he would be grouchy and useless if roused to direct his attention to anything below the level of an emergency. They reset the currents finally and, at Cusat's suggestion, trimmed Albert around the edges. Finding himself growing lighter, he suddenly began to absorb nourishment again at a very satisfactory rate.