End of message.
22, 22, 3 = I understand.

The complete number opposite each letter or numeral stands for that
letter or numeral.

Example: The signal sent by Commodore Schley's flagship "Brooklyn" that
memorable 3d of July--

T H E E N E M Y' S F L E E T
2, 122, 12 3 12, 11, 12, 1221, 111, 212 3 2221, 221, 12, 12, 2, 3
L, RLL, RL D RL, RR, RL, RLLR, RRR, LRL D LLLR, LLR, RL, RL, L, D

I S C O M I N G O U T O F
1, 212 3 121, 21, 1221, 1, 11, 2211 3 21, 112, 2 3 21, 2221
R, LRL D RLR, LR, RLLR, R, RR, LLRR D LR, RRL, L D LR, LLLR

H A R B O R.
122, 22, 211, 2112, 21, 211, 333.
RLL, LL, LRR, LRRL, LR, LRR, DDD.

R = Right = 1. L = Left = 2. D = Drop = 3.

NIGHT SIGNALLING.

The lights in the Ardois system--named after its inventor--sometimes
called "shroud lights," are placed well up on the foremast. They are red
and white electric bulbs. There are four of each placed in a line one
above the other, in groups of two--- a red and white bulb together.
Unlike the "wigwag" system, the whole letter is shown at once.

The code is the same as the "wigwag." One is indicated by a red light,
two by white, and three by the combination, white, white, red and white.

Both systems may be mastered very easily by a little painstaking
practice, and much amusement may be had through the mystification of
those who do not understand it. A "wigwag" flag may be easily made by
sewing a white square of muslin in the centre of a red bandana
handkerchief.

The best method of learning this system is to send simple messages,
looking up the letters that there is any doubt about, and correcting
mistakes as you go along.

APPENDIX.

NAVY CODE FLAGS.

Messages sent by the navy code flags cannot be read except by the aid of
the code book. There are ten numeral flags--1 to 9, and one for 0. All
messages are made up by means of these ten flags headed by the code flag
(whether it be geographical, telegraph, or navy list).

For instance, a line of bunting is sent up on the flagship's signal
halliards. It is read from the top down. The geographical flag flies
first; then follow 7, 6, 3, 8. It means that the message can be found in
the geographical list, number 7638.

The repeaters are used to avoid confusion. Instead of putting two number
1 flags together, for instance, number 1 is flown with a repeater under
it; second repeater repeats num