In this paper, an attempt will be made to draw additional attention to Owens Valley agriculture. Following a brief review of research conducted in Owens Valley, attention will be directed toward an explanation of why agriculture developed in that region. This evaluation will use as a research orientation Mark N. Cohen's (1977) population-growth hypothesis for the development of agriculture, and it will test this hypothesis against archaeological data published by Robert L. Bettinger (1975, 1976, 1977, 1978).

Craft Specialization in the Prehistoric Channel Islands, California Jeanne E. Arnold. University of California Publications in Anthropology 18, 1987, xvii + 278 pp., 23 tables, 24 figs., bibliography, $26.50 (paper).

The results of the initial analysis with the ratio technique revealed a diverse assemblage of obsidian sources. No fewer than ten different sources are represented, most of which fall into the "unknown" category (Table 2).