It is inevitable that a world-wide language be split into variant forms. Besides the fragmentary Sign Code among our children, the more copious list of signs among Latins, and the code of the Cistercian or Trappist Monks, there are the Deaf Code and the Sign Language of the American Indians. Only the two last are widely established and at all complete as languages to-day.
DEAF CODE
The Sign Language used by the deaf was originated in France by Abbé de l’Epée about 1759, with a view to
facilitating the intercommunication of the deaf. His signs were largely arbitrary or founded on the spelling of French words, usually in abbreviated form, so that it was merely a short-hand of French done into finger-spelling.
While this was the case at its beginning, the deaf themselves had instinctively done so much in the way of introducing pantomime and expressive gesture, that they have half redeemed the Code from its unfortunate original plan, and, in so doing, have made themselves intelligible to an immensely larger audience.
THE INDIAN CODE
So far as I can learn, no student hitherto has compared the various methods without being convinced that the American Indian Sign Language is the best extant. It is theoretically perfect and practically complete. In order to make this evident, I must offer a definition and some comparative details.
A true Sign Language is an established code of logical gestures to convey ideas; and is designed as an appeal to the eye, without the assistance of sounds, grimaces, apparatus, personal contact, written or spoken language, or reference to words or letters; preferably made by using only the hands and adjoining parts of the body.
Measured by these standards, there is only one true Gesture Language in the field to-day; that is the sign-talk of the American Indians. It is established over the whole area of the Great Plains; and, though varied locally, is essentially the same from Saskatchewan to Rio Grande.
In general, it is claimed that there are two well-marked