The general conclusions reached in 1947 were not substantially altered by the additional excavation. Nor did it help to solve all the dubious aspects of the Topanga Culture. As might be expected, it led, rather, to the formulation of further questions. However, new specimens and more complete data add fullness to this report, and it is hoped these will increase its utility for comparative studies. With respect to physiographic location and archaeological assemblage, the Tank Site does not conform to other sites previously known for the general environs. Comparisons with the earliest horizon yet recognized to the north, the Oak Grove of the Santa Barbara region (Rogers, D. B., 1929), seem to offer the most satisfactory parallels as related to mortuary practices and milling activities; however, inasmuch as the Oak Grove Culture is not characterized as having a well-defined flake and core industry we are forced through necessity to seek further comparative data as expressed in the cultural inventory of the San Dieguito complex in the extreme southern coastal area of southern California and among the remains from the region of ancient Lake Mohave in the eastern desert. It is both interesting and a problematical that here at Topanga we find in a single cultural complex an almost complete record of all the recognized cultural elements typifying early man in southern California. In addition to this early-man complex there remains a residue of material which appears to be best associated with cultural traits characteristic of a "middle" time position. Such middle cultures can be tentatively identified with Point Dume, the lower levels of Malaga Cove, the Little Sycamore, the Hunting Culture of Santa Barbara, the Pinto-gypsum of the desert, and the La Jolla phases of San Diego although the latter are at present poorly defined. At the Tank Site (LAn-1) these traits, which are of "middle" position, have been named Topanga Phase II, and significantly enough they are confined to the upper 18 inches of the deposit. Site LAn-2, excavated this season, proved to be almost exclusively Phase II from top to bottom. Since these two sites occupy almost contiguous positions and with the distribution of cultural elements being such as it is, the suggested cultural stratigraphy observed in 1947 seems to be fairly well confirmed.