Then, going to the deep sheet-steel sink at the end of the laboratory workbench, he turned on the cold water and let it rise to the 200 JUG mark. Thrusting his head into the water, he washed the mud from his beard and hair. The effect was pleasantly icy. Dripping and sputtering, he glanced at the door. The likelihood of visitors just now seemed small. He removed his underwear, climbed into the tank, and settled back with a shivery sigh.