"'I was sure of it!' I exclaimed. 'Are you quite ignorant of the experimental method? The experimental method in the depths of the Catacombs has demonstrated for centuries that every individual who believes that he is returning to his starting-point (at the entrance to the Catacombs) is moving away from it. Therefore the logical thing to do to get away from one's starting-point is necessarily to take the road which seems to bring you back to it!'
"We turned down the passage by which we appeared to be retracing our steps. In that way we were sure that we were not journeying in vain.
"My two stories had carried us over another mile; then M. Longuet said: 'I must really have my supper.'
"We had our supper, an ounce of ham each. There was some difficulty in judging how much an ounce was; but we did the best we could. He instructed me in the method of eating one's food discovered by M. Fletcher of the United States. We divided either ounce into four mouthfuls, not that they were by any means mouthfuls; and we chewed each patiently till we had extracted from it the last vestige of flavour. I could well believe him when he assured me that in this way we obtained from it
