Night Writing

Night writing, AKA sonography, was a system of code that used symbols of twelve dots arranged as two columns of six dots embossed on a square of paperboard, and is now remembered as the forerunner of Braille. It was designed by Charles Barbier in response to Napoleon's demand for a code that soldiers could use to communicate silently and without light at night. Called sonography, each grid of dots stands for a character or phoneme.

Barbier's system was related to the Polybius square, in which a two-digit code represents a character. In Barbier's variant, a 6×6 matrix includes most of the characters of the French alphabet, as well as several digraphs and trigraphs:

Barbier's Night Writing matrix
1 2 3 4 5 6
1 a i o u é è
2 an in on un eu ou
3 b d g j v z
4 p t q ch f s
5 l m n r gn ll
6 oi oin ian ien ion ieu

A character (or digraph or trigraph) was represented by two axes of dots, in which the first column had one to six dots denoting the row in the matrix, and the second had one to six dots denoting the column: e.g., 4–2 for "t" represented by

An example representation of the character "t"
• •
• •
•
•

As many as twelve dots (two columns of 6) would be needed to represent one symbol.

Barbier's system was found to be too difficult for soldiers to learn and was rejected by the military. In 1821, Barbier visited the National Institute for the Blind in Paris, France, where he met Louis Braille. Braille identified the major failing of the code, which was that the human finger could not encompass the whole symbol without moving and so could not move rapidly from one symbol to another.

His modification was to use a 6-dot cell, the Braille system that revolutionized written communication for the visually impaired.

Famous quotes containing the words night and/or writing:

    “The night discharged of all care
    Where wine may bear no sovereignty;
    The chaste wife wise, without debate;
    Such sleeps as may beguile the night;
    Contented with thine own estate;
    Neither wish death, nor fear his might.”
    —Martial (Marcus Valerius Martialus)

    “A man who publishes his letters becomes a nudist—nothing shields him from the world’s gaze except his bare skin. A writer, writing away, can always fix himself up to make himself more presentable, but a man who has written a letter is stuck with it for all time.”
    —E.B. (Elwyn Brooks)