The purpose of this paper is to document and refine 
 hypotheses concerning stress in Tahltan (Northern Athabaskan). 
 An analysis of the field data collected in 1980-83 by 
 Patricia A. Shaw (University of British Columbia) 
 reveals a set of correlations between stress assignment 
 and the morphological and phonological composition of a 
 string. Morphology affects stress in that the syllable 
 dominating the morphological stem is obligatorily stressed. 
 Following McCarthy & Prince's 1994 analysis of Diyari stress, 
 this fact is analyzed by requiring the left edge of every 
 stem to coincide with the left edge of the prosodic word, 
 which effectively makes the stem a separate stress domain. 
 Stress on non-stem syllables is assigned on alternating 
 syllables counting from the stem stress, with a stress clash 
 in words in which only one syllable precedes the stem. 
 These phonological generalizations are handled by assigning 
 trochaic feet from left-to-right in a fashion that respects 
 the Stem-to-ProsodicWord alignment principle and other 
 constraints on metrical structure, i.e., Foot Binarity and 
 Strict Layering. Exceptions to this analysis are also 
 identified in the corpus, and they are shown to follow 
 straightforwardly from minimal modifications of the 
 assumptions that explain the core data.