_Blind taught to read._--Burnet, in the postscript of his _Letter from
Milan_, dated Oct. 1, 1685 (ed. Rotterdam, 1687, p. 114.), speaking of
Mistress _Walkier_, who had been accidentally blinded in infancy,
states, that her father "ordered letters to be carved in wood;" and that
"she, by feeling the characters, formed such an idea of them, that she
writes with a crayon so distinctly, that her writing can be well read."
What is the earliest known instance of the blind being taught to read or
write by the instrumentality of raised letters?