appear between A and B by sending it up a side-line H I, by shifting the points, and he had waited for it at K. But the train had neither appeared at A nor at K, that is to say, either to him or to anyone else. Next a railway-carriage had appeared to him at K; and presently that railway-carriage itself had disappeared. I could well have believed that this man, considering his past (the past of Cartouche!) and the story which he now told me, was mad, if he had not expressed himself so logically, and given me the most exact material details about the points, the switch, and all the facts of the case.
"Moreover, it is a matter of common experience that a madman always understands everything. But this man wanted to understand. I begged him to repeat the story. He said nothing. Twice I reiterated the request and still he said nothing. I was about to lose patience, when, grasping the fact that I had asked him something, he told me that now and then he was deaf for a few minutes.
"Since he had recovered his hearing, we returned to the problem of the express. He assured me that he would rather die ten times in the depths of the Catacombs than come out