Rare Stones Research Articles

Aztec craft production and specialization: Archaeological evidence from the city‐state of Otumba, Mexico

Abstract Recent (1987–9) archaeological research within the Aztec city‐state of Otumba located in the northeastern Basin of Mexico has provided data relevant to a consideration of the role of craft specialization in the evolution of city‐states between the fall of Tula (c. AD 1150) and the arrival of the Spaniards (AD 1519). Designed to evaluate alternative models of such evolution the investigations have confirmed the presence of extensive archaeological evidence for craft specialization in the city‐state centre of Otumba. Items manufactured at the site include obsidian cores, prismatic blades, and bifaces, ornaments of obsidian and rare stones, figurines, ceramic censers, spindle whorls (and their moulds), fibres, and groundstone implements. Craft specialization at rural dependencies was more restricted. The results of the project shed important light on the intricacies of the Aztec economic system.

Étude ethnobotanique des espèces fruitières landaises

Ethnobotanic study of Grande Lande fruit species, Landes of Gascogne natural area, begun in 1979, has permitted to repertory a lot of each specy varieties. After inventory, description and if possible varieties determination, the rarest ones, the ones are going to disappear and the most typical ones, have been grafted in the « Ecomusée de la Grande Lande » to conserve these genotypes and to study cultivars agronomic caractères (pedo-climatics conditions' adaptations, parasitism résistance, blossoming phenology, fructification types, and so on...) by appropriate biometric measures and controled hybridizations. The study of agricultural methods, cultural and alimentary traditions in keeping with these ancient cultivars, has permitted to thorough command of these species.

Bones and rare stones make colors for new money

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBones and rare stones make colors for new moneyScience Service Cite this: J. Chem. Educ. 1929, 6, 10, 1747Publication Date (Print):October 1, 1929Publication History Received3 August 2009Published online1 October 1929Published inissue 1 October 1929https://doi.org/10.1021/ed006p1747.1RIGHTS & PERMISSIONSArticle Views24Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (471 KB) Get e-Alerts Get e-Alerts