After I had considered a little while, I said to the Emperor, "Sire, there is a method which perhaps will do. Your majesty has the imperial calendar."--"Yes, sure."--"Well, Sire, the calendar contains the lists of the general officers and colonels of the army. Now, I will suppose, for example, that the regiment quartered at Chambery is commanded by Colonel Paul. I look into the calendar, and I find that Paul stands forty-seven in the list of colonels. I will also suppose that, between ourselves, 'bill of exchange' means 'colonel' or 'general.' Then I shall write to your Majesty, I have seen your correspondent at Chambery; he has paid me the amount of your bill of exchange, No. 47. Your Majesty will turn to your Majesty's calendar, and then your Majesty will see, that the 47th colonel who commands the regiment of Chambery, is called 'Paul.' And, lastly, in order that your Majesty may be able to tell when I speak of a colonel, a general, or a marshal, I shall take care to indicate the rank of the officer by one, two, or three dots, placed after the 'No.' The colonel will have one dot, No. .; the general two, No. .., &c."--"Very good, very good. Here is a calendar for you. Bertrand has one which I will take." The calendar given to me by the Emperor was richly bound, and stamped with the imperial arms. I tore off the binding. The Emperor kept walking up and down, and saying, as he laughed, "It is really excellent; they will never be able to see through it." When I had finished, he said, "One thought brings on another. I have asked myself how you would manage to write to me, if you should have any thing of unexpected importance to communicate. For instance, suppose any extraordinary event should make you think that my disembarkation ought to be accelerated or retarded; if the Bourbons were to be on their guard; in short, I know not what." He remained silent, and then began again. "I only know one way to provide for it: the confidence which I place in you ought to be unbounded. I will give you the key to a cipher which was composed for my use, in order that I might employ it in corresponding with my family under the most important circumstances. I need not tell you that you must keep it with care: always carry it about you, lest it should be lost: and if the smallest danger arises, burn it or tear it at the slightest suspicion. With this cipher you may write any thing to me which you like. I would rather that you should use it, than be under the necessity of coming back, or of sending any messenger to me. If they intercept a letter written in my cipher, it will take them three months to read it; whilst the capture of an agent might ruin all in an instant." He then went and looked out his cipher; he made me employ it under his eyes, and delivered it to me, exhorting me not to use it unless all other modes of communication should become insufficient.