"His wheels have gone to his head," said Dr. Pump, feeling the pulse in Bikey's pedals.

"Nonsense," said Bikey. "Impossible. I haven't any head."

"H'm!" returned Dr. Pump, scratching his chin. "Very true. In making my diagnosis I had failed to observe the fact that you are an ordinary brainless wheel. Let me look at your tires."

Bikey held them out.

"Do you prefer homeopathic or allopathic treatment?" asked Dr. Pump. "We are broadminded here and give our patients their choice."

"What difference does it make in the bill?" asked Bikey.

"None," said Dr. Pump, grandly. "It is merely a difference in treatment. If you wish homeopathic treatment we will cure your tires, which seem to be punctured, with a porous plaster, since like cures like under that system. If, on the other hand, you are an allopath, we will pump you full of rubber."

"I think I prefer what they call absent treatment," said Bikey, meekly. "Can't you cure me over the telephone? I'm a Christian Scientist."

They had never heard of this at Saturn, so Bikey was compelled to submit to one of the two other courses of treatment, and he wisely chose the porous plaster to cure his puncture, since that required merely an external application, and did not involve his swallowing anything which might later have affected his general health.