The language lacks _f_, _v_, and _r_. In attempting to pronounce English words, _p_, _b_, and _l_ are substituted, respectively, for these sounds, while _ch_ is changed to _ts_. The diphthong _au_ is also wanting, and short _û_ occurs only in a few words of foreign origin. With the exception of _ă_ short or obscure, the vowels are generally long. _D_ has a slight explosive sound and approximates _t_. Before _l_ it is softened or sometimes even entirely elided, the vowel being lengthened to supply the hiatus. Thus in Bartlett's vocabulary we find _ol_, _k'ul_, and _kol_ for _âdal_, _k`odal_, and _gadal_. The same change is made by the Kiowa in pronouncing English words of like character, as _s[=ā]l_ for _saddle_. The most common vowel sounds are _a_, _ä_, _e_, and _o_; _â_ with certain speakers becomes _o_, and _e_ is weakened to _i_. Nasal vowels are frequent. There are several aspirated or medial sounds and a strong explosive _k`_. Below is given the list of sounds according to the Bureau system, nasals being indicated by _ñ_. A frequent rising inflection at the end of words, represented by some authors by means of a final _h_, is here indicated by the accent _´_. Like all other living languages, the Kiowa is undergoing a process of gradual change, and many archaic forms and expressions are used by the old men, particularly in reciting myths, which are unknown or difficult of interpretation by the younger people. The same fact has been noted among other tribes (_Matthews, 5_). The changes are more rapid in Kiowa on account of the tribal custom, already mentioned, of substituting new words for any which suggest the name of a person recently deceased. Even such common words as _dog_, _bird_, and _moccasin_ have thus been entirely changed within a few years, and some old men remember as many as three different words used at different periods for the same object. As this process has been going on for an indefinite length of time, it of course adds difficulties to the work of investigating the linguistic affinities of the language. In most, if not all cases, however, the new word is not an actual new creation, but a new combination of old root forms. In most tribes we find the priests using in their ceremonial rites a peculiar dialect, full of archaic forms and figurative expressions unintelligible to the common people. This is probably true also of the Kiowa. Traces of dialectic forms appear in the language, and from this fact and from statements of the old people, it is probable that some at least of the six recognized Kiowa tribal divisions previously described, were originally distinct, but cognate and allied, tribes, speaking different dialects. The extinct K`uăto particularly are said to have spoken the language in a peculiar manner. A few words from other Indian languages, occurring in the text, are also included in the glossary. Corrupted popular forms of Indian words are printed in capital letters. Sounds