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How Atlatl Darts Behave: Beveled Points and the Relevance of Controlled Experiments

Published online by Cambridge University Press:  20 January 2017

Devin B. Pettigrew
Affiliation:
Department of Anthropology, University of Arkansas, Fayetteville, AR 72701 (dpettig08@gmail.com)
John C. Whittaker
Affiliation:
Department of Anthropology, Grinnell College, Grinnell, IA (, whittake@grinnell.edu)
Justin Garnett
Affiliation:
Kansas City, MO, (justin@basketmakeratlatl.com)
Patrick Hashman
Affiliation:
Story City, IA, (pathashman@gmail.com)

Abstract

Beveled retouch on stone projectile points has often been considered as a device to spin and stabilize a projectile. A recent paper showed that a beveled point will spin a small shaft under tightly controlled laboratory conditions. However, this experiment has little relevance for real projectiles such as atlatl darts, which flex dramatically and spin unevenly inflight, quite independent of point form. The spinning is related to the flexibility of the dart, which is necessary for spearthrower functión. A beveled point cannot spin a dart in the air, but is likely to cause some rotation when encountering a solid target like flesh. Beveled points are probably not related to spinning either darts or arrows inflight and present a good example of why we need to have both theoretical understanding and experimental observations of details of projectile behavior before interpreting artifacts. Spinning in a carcass could make beveled points more lethal, but the suggestion that beveling mostly results from sharpening and other modification of stone points remains the best explanation.

Résumé

Résumé

El retoque biselado en las puntas de piedra arrojadizas con frecuencia ha sido considerado como estrategia para hacer girar y estabilizar un proyectil. Un estudio recién mostró que una punta biselada hará girar una asta pequeña bajo condiciones extremadamente controladas en el laboratorio. Sin embargo, este experimento tienepoca relevancia en cuanto losproyectiles auténticas como los dardos del atlatl (estolica), que se flexionan dramáticamente y giran erráticamente en vuelo, no importa la forma de la punta. La rotación se relaciona con la flexibilidad del dardo, la cual es necesaria para la buenafuncion del atlatl. Una punta biselada no puede hacer girar un dardo en el aire, pero probablemente va a causar algo de rotación cuando encuentra un bianco sólido como la came. Las puntas biseladas probablemente no se relacionan con la rotación de dardos niflechas en vuelo, y presentan un buen ejemplo de la necesidad de tener ambos el conocimiento teórico y observaciones experimentales de los detalles del funcionamiento de los proyectiles antes de interpretar los artefactos. La rotación en una carcasa podria hacer más letales las puntas biseladas, pero la sugerencia que el biselado resulta principalmente del afdamiento y otras modificaciones de las puntas de piedra permanece la mejor explicación.

Type
Reports
Copyright
Copyright © The Society for American Archaeology 2015

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