Ah, I see. I was worrying they'd got lip reading wrong.
Although I did find one site that claimed a survey had reavealed there were
x number of tongue readers in the US...
Incidently I found an old 'cyclopedia (a little book of useful knowledge, such as temperature conversions and animals' body temperatures) which had Palmistry and that thing that describes a person's personality by studying the shape of their - they were under 'science'.