A collection of chipped stone specimens from a locality on the south shore of Tulare Lake in the San Joaquin Valley of California includes a number of points which are closely analogous to specimens of the fluted point tradition (Clovis-Folsom). Other chipped stone pieces suggest antiquity and probable San Dieguito affinity. The site, known as the Witt site, after the collector, shows few or no late period artifacts and lies below the late prehistoric Tulare Lake level.

A site survey was conducted in the upper drainage basin of the Rio Zahuapan in north-central Tlaxcala, Mexico, during the 1964-65 season. Sixty-three ceramic collections from 59 sites were examined and eventually seriated. The resulting sequence of pottery types indicates that, in spite of its location near major pre-Hispanic centers, this area was apparently not in the mainstream of Mexican prehistory until Late Postclassic times. Moreover, the locations and sizes of the sites sampled indicate that the area never completely lost its rural character. However, Tlaxcalan influence increased significantly with the resistance to the expansion of the empire centered at Tenochititlán and the eventual alliance with Cortes.

Analysis of faunal remains from archaeological sites is at least as much an archaeological as a zoological problem since food animal remains are essentially artifactual in nature, their occurrence in deposits being the result of human activity.

This paper examines some of the methods used to make such analyses and suggests the merits and faults of the various approaches. It also suggests some of the kinds of inferences which may be drawn when detailed and careful investigation of faunal material is carried out, preferably by the archaeologist.

A unique grinding tool, termed a "gyratory crusher," was developed very early in Phase I of the Amargosan-Pinacateño occupation of the Sierra Pinacate, an isolated ecological and archaeological enclave in extreme north-western Sonora, Mexico. The gyratory crusher resembles a perforated mortar, either in slab or block form, in which a wooden pestle with a projection extending through the perforation in the mortar base was gyrated, the projection providing leverage against the under rim of the hole, to grind mesquite pods. The crusher underwent modification, and its use seems to have been discontinued with the disappearance of mesquite forests at the end of the Yuman I period, about A.D. 1100-1200. A few similar tools are reported late in time in the western Sierra Madre, Mexico, and also from early horizons in Iran and Israel. Recognition of the tool type may extend its known distribution in both the New World and the Old World.

For the period of ca. 2500 to 1700 B.C. a three-phase sequence in the development of twined cotton textiles is outlined. The phases represent divisions of a gradual change from the use of single-warp twining to the use of plural-warp twining as revealed in recent excavation at five sites in the Ancón-Chillón area of coastal Peru.

This paper explores the potential contribution of civil engineering theory to archaeology. Given certain basic data we can ask specific questions about prehistoric concepts of construction, design, measurement, etc. An example of a method of analysis of structures and geometrics is given utilizing the limited information from the Adena and Hopewell cultures. Conclusions are drawn as to what certain structures looked like, how they were built, and their efficiency in serving their apparent purposes.

Little is known of the post-Folsom sequence at Blackwater Draw, Locality No. 1, in spite of over 30 years of intermittent excavation by major institutions at this site location. Until recently it has been lumped under the name of the "Portales complex" under which several culture complexes were grouped as a single entity. This paper makes an initial attempt to separate these cultures in chronological sequence.

An examination of reports by Tylor (1861), Holmes (1900, 1919), and Spence and Parsons (1967) describing obsidian mines near Cerro de las Navajas in southern Hidalgo indicates that not one but three mine groups have been visited and described.

Features which have been interpreted as "fire hearths" and "charcoal" have been recorded in association with mammoth and other Pleistocene faunal remains. Some of these remains have been dated by the radiocarbon method as exceeding 10,000 years; a few are considerably in excess of this time. A review of some of these remains suggests the probability of noncultural origin for the carbonaceous material in question. Recent excavations in Merced and Orange counties, California, have revealed Pleistocene faunal remains in direct association with an abundance of carbonaceous material. It can be demonstrated that these remains are noncultural in origin.

The Universal Transverse Mercator Grid is a rectangular grid system now used on all standard military maps. Archaeologists could use this system for site location, which would prove especially beneficial in areas where townships and range grids have not been drawn. The use of the series of numbers in the system would help eliminate duplication in state or regional site files.

A survey of a cenote in Sacalum and the Chilam Balam of Chumayel suggests strongly that Sacalum, Ticul, and probably Tixtohilcheen have been a source of the mineral attapulgite used variously in the manufacture of Maya Blue, for medicinal purposes, and as a pottery temper.