In this essay Jackson gives special attention to the orthography of the Mesha Inscription. He begins by explaining the distinction between historical spelling and vowel-letters, arguing that historical spelling of contracted diphthongs was probably the impetus for the use of vowel letters by analogy. The Mesha Inscription reflects a transitional point between historical spelling and intentional use of matres lectionis. Against Cross and Freedman, Jackson argues that there are some forms in the inscription where final vowels are not marked. However, all final 1cs suffixes are marked with yod, in contrast to the contemporary Phoenician, as are the endings of 1cs perfects.