tolerable good-humour; and, to do them justice, the bystanders seemed
to think the retort no worse than the provocation deserved.

"I am sorry," said my friend, "you should have fallen in with so
unpleasant a specimen of the character your countrymen ascribe with
too much reason to Americans. I have been long in England, and never
met with such discourtesy from any one who recognised me as an
American."

After this our conversation became less reserved; and I found that I
was conversing with one of the most renowned officers of irregular
cavalry in the late Confederate service--a service which, in the
efficiency, brilliancy, and daring of that especial arm, has never
been surpassed since Maharbal's African Light Horse were recognised by
friends and foes as the finest corps in the small splendid army of
Hannibal.

Colonel A---- (the reader will learn why I give neither his name nor
real rank) spoke with some bitterness of the inquisitiveness which
rendered it impossible, he said, to trust an American with a secret,
and very difficult to keep one without lying. We were presently joined
by Major B----, who had been employed during the war in the conduct of
many critical communications, and had shown great ingenuity in
devising and unravelling ciphers. On this subject a somewhat
protracted discussion arose. I inclined to the doctrine of Poe, that
no cipher can be devised which cannot be detected by an experienced
hand; my friends indicated simple methods of defeating the processes
on which decipherers rely.

"Poe's theory," said the Major, "depends upon the frequent recurrence