form of writing common to all languages.

Wennsshein's method was adopted with slight changes afterward by the majority of subsequent "original" systems. It was modified and supplemented by Richard Grey (1694-1771), a priest who published a Memoria technica in 1730. The principal part of Grey's method is briefly this:Wennsshein's method is comparable to a Hebrew system by which letters also stand for numerals, and therefore words for dates.