"As a scientist you'd make a magnificent plumber, George!" retorted the Big Business Man. "You're about as helpful in this little gathering as an oyster!" The Very Young Man rang for a waiter. "I've been thinking----" began the Banker, and stopped at the smile of his companion. "Shut up!"--he finished--"that's cheap wit, you know!" "Go on, George," encouraged the other, "you've been thinking----" "I've been tremendously interested in this extraordinary story"--he addressed himself to the Chemist--"but there's one point I don't get at all. How many days were you in that ring do you make out?" "I believe about seven, all told," returned the Chemist. "But you were only away from us some forty hours. I ought to know, I've been right here." He looked at his crumpled clothes somewhat ruefully. "The change of time-progress was one of the surprises of my adventure," said the Chemist. "It is easily explained in a general way, although I cannot even attempt a scientific theory of its cause. But I must confess that before I started the possibility of such a thing never even occurred to me." "To get a conception of this change you must analyze definitely what time is. We measure and mark it by years, months, and so forth, down to minutes and seconds, all based upon the movements of our earth around its sun. But that is the measurement of time, not time itself. How would you describe time?" The Big Business Man smiled. "Time," he said, "is what keeps everything from happening at once." "Very clever," laughed the Chemist. The Doctor leaned forward earnestly. "I should say," he began, "that time is the rate at which we live--the speed at which we successively pass through our existence from birth to death. It's very hard to put intelligibly, but I think I know what I mean," he finished somewhat lamely. "Exactly so. Time is a rate of life-progress, different for every individual and only made standard because we take the time-duration of the earth's revolution around the sun, which is constant, and arbitrarily say: 'That is thirty-one million five hundred thousand odd seconds.'" "Is time different for every individual?" asked the Banker argumentatively.