on page 64, §328, the 'indefinite preposition' iv. But it is clear from Dutton's entry that the affixes -i and -v are not derived from this preposition but rather that the preposition is a backformation from the affixes. Dutton says [words in italics were written as italicized speedwords in the original]: "The prepositions 'at', 'on', 'by', 'under', etc. are sometimes used to convey a somewhat loose idea of association without any definite idea of position, as in 'at the most', 'by the way', 'on business', 'under difficulties', etc. When, therefore, any preposition is not literally applicable, the Speedword 'iv' is used. This Speedword consists of the two association suffixes 'i-' and '-v' and hence appropriately conveys the idea of association without definite sense of place." Interfixes (not written)- two-root compound -'' three-root compound For examples see Compound words in the 'Phonology and orthography' section above. Potential improvements to Speedwords There are three potential improvements to Speedwords which would overcoming ambiguities, remove omissions or deficiencies, and overcome confusion. These were discussed. A major ambiguity is terminological. Dutton uses three terms interchangeably in TYDS. They are 'parent word' (page 9, 88), 'radical' (page 88) 'word-root' (page 51, 52), and 'word family' (page 89). He sometimes uses them identically, to mean the stem, that is an indivisible element TYS page 88). At other times he means the indivisible element plus prefix or suffix or the compounds of indivisible elements (TYDS, page 158). By doing so he lacks the ability to distinguish between them. It would be much simpler to reserve the three terms for the indivisible element and then use the term "extension" for the addition of prefix or suffix. "Compound" would retain its existing usage. Even more confusingly he adds another term 'word familities' (TYDS, page 89). It is not clear whether this refers to the indivisible element plus all its prefixes and suffixes. Dutton also refers to "keywords" meaning the basic or essential stem words to which prefixes and suffixes are added. So, this means there is ambiguity for the learner on what is the basic vocabulary of Speedwords. Some further research is underway to see if this can be clarified. There is an obvious omission and deficiency. These could have easily been rectified by Dutton using his personal knowledge and included in an expanded TYDS edition. The major omission is a description of his rationale behind formulating the Speedwords he