The book of deaf-mute signs & two alphabets

Booklet showing the Manual Alphabet and common signs. Deaf and dumb schools and clubs are illustrated as are 21 shadowgraphs (images made from the shadows of people's hands). Includes a portrait of the Abbot Charles de l'Epee (1712-1789), "originator of the deaf and dumb alphabet" and causes of deafness (marriage of relatives, kissing one's lover's ears, smelling salts, damp and boxing of the ears). The cover shows 4 young women in low cut dresses and corsets.