Ethnographic data on the mining and use of turquoise in southeastern California provide an analogous framework for the archaeological interpretation of prehistoric patterns in the Halloran Springs Region of San Bernardino County. The ethnographic record also provides some insight into Mohave and Chemehuevi land tenure and exploitation patterns.

A Southern California Indigenous Ceramic Typology: A Contribution to Malcolm J. Rogers' Research. Ronald V. May. Archaeological Survey Association of Southern California, A.S.A. Journal 2(2), Fall-Winter 1978, 54 pp., 9 figs., $2.00 (paper).

The remains of shellfish of various species comprise a significant fraction of many coastal southern California middens. Analysis of the growth rings of certain species permits determination of the season in which the shellfish were collected for food, and hence the season in which the middens were occupied. These data are thus useful for clarifying certain aspects of settlement patterns. The present paper adds two species of Chione clam to the list of molluscs used as indicators of archaeological seasonality, and discusses the implications of these findings for understanding prehistoric settlement adaptations on the southern California coast.

This article describes several Navajo structures in the Mojave Desert in terms of their architecture and ethnohistoric function. Documentation is also provided regarding the nature of general Navajo settlement patterns in southeastern California.

The initially recovered ceramics were in close association with three radiocarbon samples analyzed to establish a general chronological placement of the site. Subsequent excavation were primarily concerned with obtaining radiocarbon samples in direct association with fired-clay objects.

If a horizon is taken to be "a primarily spatial continuity represented by cultural traits and assemblages whose nature and mode of occurrence permit the assumption of a broad and rapid spread" (Willey and Phillips 1958: 33), then Wallace's archaeological cultures are not, strictly speaking, horizons. While Warren's 1968 article failed to resolve the problems of horizons, Warren (this issue) does make the useful observation that Wallace's (1955: 228) brief discussion of southern California coast cultural development was one in which horizons became very much like stages of cultural development.

Prehistoric turquoise mining in California has been treated in a cursory fashion, and the papers which address this industry are based upon field work prior to 1930. The intensity of mining and its relationship to cultural development in the Southwest suggests this activity warrants detailed analysis. This article addresses the tools, techniques, and antiquity of aboriginal turquoise mining in the Halloran Springs district of San Bernadino County, California.