hart is the author of three known works on grammar and spelling: an unpublished manuscript from 1551 titled "the opening of the unreasonable writing of our inglish toung"; a printed pamphlet titled "an orthographie", published in 1569; and a practical reading primer titled "a methode or comfortable beginning for all unlearned", published in 1570. in these works, he criticises the contemporary spelling practices of his day as chaotic and illogical, and argues for a radically reformed orthography on purely phonological principles. his goal was to introduce a spelling system with a one-to-one relationship between sounds and symbols ("to vse as many letters in our writing, as we doe voyces or breathes in speaking, and no more "). for this purpose, he introduced six new phonetic consonant symbols for the sounds and syllabic "l", as well as a system of diacritics for vowels. long vowels were systematically marked by a dot below the letter, while the reduced vowel schwa was marked by ë.