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Growth-ring studies were made on material from 28 pinyon (Pinus monophylla) stumps, cut in the late 1800's, near Charcoal Kilns, Panamint Mountains, Death Valley National Monument, California. Comparative material for tree-ring dating of the stumps consisted of increment borings from adjacent pinyon, limber pine (Pinus flexilis), and bristlecone pine (Pinus aristata); and from cross sections of two recently cut pinyon stumps and of numerous stems of big sagebrush (Artemisia tridentata) . Cutting in the period 1876-1879 is indicated by tree-ring dating for 26 trees presumed to have been utilized as material for the nearby Charcoal Kilns.

The annual increment growth measured by dendrographs on three different species is essentially a linear function of tree-ring width. The bark increment remains more or less constant. Records from dendrographs can therefore be employed in studying the environmental and physiological determinants of ring width.

A Basket Maker III pithouse excavated in 1959 provides a cluster of tree-ring dates which terminate at A.D. 608. Features in the structure are typical of pithouses from the same time period in the area, with a northsouth orientation and a large southern antechamber having an inclined entranceway. Atypical features include a low bench encircling the main room and the presence of small adobe pellets at the bottom of each of the four post holes.

Seven charcoal tree-ring specimens from Site 1060 yielded dates with the range A.D. 544-608. It is concluded that outside A.D. 608 most nearly represents the time of construction of the pithouse.

No description available.

No description available.

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This, the first of five articles, gives the dates from specimens collected by the Navajo Land Claim Field Research teams. All specimens came from the Northern Sector of the Navajo Land Claim area. Out of a total of 237 specimens worked, 145 of them were dated and are listed here. Several specimens from each area were measured and plotted with modern cores from the area. The indices for each area are given, as well as the average indices for the Northern Sector.

Presented in this article are the dates of specimens collected from the Western Sector of the Navajo Land Claim. Of the 1283 specimens processed, 482 were dated. This is a dating percentage of 38 percent. All but one of these dated specimens were Pinus edulis Englm. The Western Sector has been divided into four areas; from west to east they are (1) Havasu Canyon, (2) Navajo Mountain, (3) Lower Little Colorado, and (4) Chinle. Indices for all areas except the Chinle are presented.