The skipper of the Subterro sub pulls a switch and there is a noise like three contented cats purring. The metal fish slides along the surface of the underground lake and comes to a hole in a big rock ledge. We see all this through a monitor which registers the scenery outside the sub within a radius of three miles. The sub slides into the side of the rock, and then is lifted up to the underground river that winds and winds upward like a corkscrew to the outlet under Brazil. Every once in a while a blast of air that smells like a dentist's office goes through the sub from bow to stern and I ask why. "There is such terrific potency to the power we use from our puranium," Hitler Number Three says, "that we purify the air every few seconds with formula XYB and Three-fifth. The basis of the gas is galena." I nudge Wurpz and Zahooli as the Neofeuhrer goes over to converse with his crew. "It is our big chance," I whisper. "You watch how they run this tub for the next few minutes. Then when I cough three times you be ready. I do not know how much powder it will take to knock off the big bug as he is half human. Once I blow this insect powder at the same time as the purifying blast is to take place, you two be ready to jump Agrodyte. I noticed that a small purple light flashes on over the monitor just before that stuff turns loose. It is a warning so the beetleheads can take deep breaths." "Sep," D'Ambrosia Zahooli says. "I take back all the insults of the past five hours. Shake." "I am doin' that already," I says. "We have to work fast while we are in the underground river." We wait. The Neofeuhrer comes walking back to where we are sitting. The purple light flashes on, and I count to three. Just as the blast of air loaded with XYB plus cuts loose I throw all the bug powder left in the box into the current. Hitler Number Three breathes in a big gob of it and buckles a little at the knees. "Grab him!" I screech. "Don't let him yank that disintegrator loose. Hit him with anything you see, pals!" I see the other beetleheads collapse like they had been hit with bulldozers and I know now that insecticide is more dangerous in Subterro than all the radioactivity harnessed up on six planets. Agrodyte Hitler, however, has some moxey left in him as he has two of his hands around Wurpz's throat, the third around Zahooli's leg and is reaching for a ray Betsy with his fourth. He grabs the disintegrator just as I belt him over his ugly noggin with a wrench about two feet long and which was certainly not made of aluminum or balsa wood. "Himmel!" the Neofeuhrer gulps. "Ach du lebensraum!" He has to be hit once more which is enough and we tie him up with rope that looks like it was made out of plutonium filaments.