1829 braille

Braille recognized, however, that the dashes were problematic, being difficult to distinguish from the dots in practice, and those characters were abandoned in the second edition of the book.

The modern 5th decade and other supplemental signs do not appear in the 1829 version of braille, apart from ⠐ and ⠒ in plainsong notation.

Punctuation differed slightly from today, even accounting for the shift downward when the dash was dropped from the bottom row of the cell.

The original proposal was as follows: The book allots a great deal of space to the representation of music.

The book finishes with a proposal for braille shorthand, utilizing the first decade for vowels, and the fifth for consonants (without a voicing distinction).

The second edition of the Procédé, published in 1837, sets out French Braille essentially as we know it today.

The official Unicode encoding for Braille only specifies codepoints for modern dot-only patterns.

The character tables of Braille's 1829 publication.
The final form of Braille's alphabet, according to Henri (1952). The decade diacritics are listed at left, and the supplementary letters are assigned to the appropriate decade at right. "(1)" indicates markers for musical and mathematical notation.