there are teenagers who have unprotected sex but have a case for their iphone
just let that sink in
Functional insights into the innovative Early Howiesons Poort technology at Diepkloof Rock Shelter (Western Cape, South Africa)
“The Howiesons Poort (‘HP’) is characterized by a set of technological innovations that mark a rupture in the Southern African Middle Stone Age. However perspectives regarding its origin and emergence remain speculative. The recent identification of an early HP phase at Diepkloof Rock Shelter provides the opportunity to characterize the initial stage of this technology and to discuss various mechanisms behind its innovative characteristics.
This study provides a technological characterization of the Early HP lithic industry of Diepkloof that focuses on micro-wear analysis. These results suggest that the early HP contained the full spectrum of innovations found in later expressions of the HP in terms of raw material provisioning strategies and techno-typological rules. Use-wear analyses support the suggestion that a wide range of activities were performed on site and show that geometric backed tools (predominantly composed of truncated forms) were 1) not devoted to specific tasks and 2) used predominantly as knives, not as projectiles. The innovative driver at the origin of the HP is likely not related to the adoption of new hunting weapons but to a novel way of conceiving and hafting tools, based on standardized and interchangeable products. The rapid adoption of this new hafting technique may explain the sudden appearance of the HP technological system in the archaeological record” (read more/not open access).
(Source: Journal of Archaeological Science, 2013, in press)
NATURAL HISTORY ILLUSTRATIONS
from Albertus Seba
Locupletissimi Rerum Naturalium Thesauri Accurata Descriptio et Iconibus Artificiosissmis Expressio per Universam Physices Historiam
The most complete record of any of the eighteenth-century cabinets of natural history.
Albertus Seba was an apothecary in Amsterdam who became rich in the service of the Dutch East India Company. During this time the Dutch, through the Company, commanded the most extensive network of trade and colonies in the world, and it was by exploiting this that Seba managed to acquire his collection.
Accordingly, Seba gathered a vast array of specimens from Sri Lanka, Greenland, Indonesia and other far-flung places. Many specimens were South American, particularly Brazilian; these came to him via the Dutch colony in Surinam.
The present work is a catalogue of his second and grandest cabinet of natural rarities, including mammals, birds, plants, insects, butterflies, reptiles, amphibians, fish, crustaceans, shells, minerals and fossils.
Seba’s cabinet played an important part in Linnaeus’s classification of the natural world. … Maria Sybilla Merian made use of the cabinet in her great work on Surinamese insects.
Many of Seba’s specimens still survive in European museums.
( Sotheby’s )