The system expounded by Medhurst influenced later dictionary compilers with regard to tonal notation and initials, but both his complicated vowel system and his emphasis on the literary register of Southern Min were dropped by later writers. Following on from Medhurst's work, Samuel Wells Williams became the chief proponent of major changes in the orthography devised by Morrison and adapted by Medhurst. Through personal communication and letters and articles printed in "The Chinese Repository" a consensus was arrived at for the new version of POJ, although Williams' suggestions were largely not followed.