I knew, but it was not enough to know,--I must be sure.

There was a way--it came to me with my first fluttering breath as I recovered from my faint.

In those old days when I was thrown much with this man, he had shown me a curious cipher and taught me how to use it.

It was original with himself, he said, and some day we might be glad of a method of communication which would render our correspondence inviolable.

I could not see why he considered this likely ever to be desirable, but I took the description of it which he gave me and promised that I would never let it leave my person.