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Jonathan Coulston

Evidence for Greek and Roman artillery comes from the surviving technical treatises, incidental historical and subliterary references, and, most importantly, finds of both machine-fittings and projectiles. The latter at present date from the 2nd cent. bce to the 4th cent. ce.In 399 bce artificers of *Dionysius (1) I apparently invented the first artillery piece (Diod. Sic. 14. 42. 1). The gastraphetēs shot arrows only, and somewhat resembled an early medieval crossbow. Propulsion force was supplied by a composite bow, which, being too powerful for a man to draw by hand, was bent by means of a slide and stock. Later gastraphetai, some of which were stone-throwers, used a winch and had a stand. Torsion catapults appeared around 340 bce, possibly invented by *Philip (1) II's engineers. Stock, winch, and base remained much the same, but two springs, bundles of rope made from animal sinew and held at high tension in a metal-plated wooden frame, now provided propulsive power. Torsion machines improved continuously in efficiency through the Roman period. From c.


Rebecca Futo Kennedy and Katherine Blouin

Natural environments such as the air currents, temperatures, waters, and topography were thought to shape humans, animals, and plants. For humans, the impact was physical, behavioural, and cultural. For animals, the impacts were mostly physical (e.g., oxen in Scythia have no horns because of the cold). This is typically referred to as environmental or climatic determinism. Early explicit examples of this idea include the HippocraticAirs, Waters, Places and occasional comments in Herodotus, but arguments for such a relationship between identity and environment as early as Homer’s Odyssey and Hesiod have been made.1 There is a long-standing tradition beginning with Homer and extending through the Roman imperial period of humans, animals, and their hybrids being associated with geographic distance from an imagined centre, dwelling in designated climate bands, or being earth-born or autochthonous (gēgenēs, autochthōn) that may reflect early forms of environmental determinism. The ideas continue to circulate in much the same form as found in the Hippocratic Airs in Roman authors such as Vitruvius, Manilius, Pliny the Elder, and Vegetius.