The Vowels of Proto Uto-Aztecan

0. The two major works presently available concerning the reconstruction of Proto Uto-Aztecan (PUA) are in substantial agreement with regard to the major outlines of the PUA sound inventory. In initial position, both Voegelin, Voegelin, and Hale (henceforth VVH) and Miller reconstruct the following proto consonants: *p *t *c *k *kw *? *s *h *m *n *w *y; the essential validity of this reconstruction is easily confirmed by an examination of cognate sets.' Moreover, both VVH and Miller reconstruct a five vowel system for PUA and agree on *i, *a, *u, and *o to represent four of the