Am 7. Mai 2007 um 3:09am schrieb turpin d'isigny-ffytche:

> There are many aspects to the evolution of choreography  in the 18thc, 
> probably important among which is the first public awareness of the 
> language of the Deaf, and its study (preeminently in French cities 
> (which?))

This could be a misleading - for while a certain level of urabanization 
is necessary for enough deaf people to find each other - for hard-wired 
latent language to become actual, incarnate  -  the 18th c has anyway 
among its themes that of  Ideal languages and analogue language - which 
may account for both the fascination with the dance and with sign 
language.
I have to reas Rameau treatise in search of traces of the 'Universal 
Characteristic' (which was leibniz' name for the Ideal noise-free 
language)