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London, New York, Bombay, Calcutta: Longmans, Green, And Co. 1907. – 46 р. Since my recent book on mediæval archery and ancient weapons was issued, I have obtained a considerable amount of information concerning the projectile engines of the Greeks and Romans. I now print a concise account of the history, construction, and effects in warfare of these engines. In this summary the additional notes I have acquired are included. Contents: . Introductory notes on ancient projectile engines. The catapult. The balista. The trebuchet. Historical notes on ancient and mediæval siege engines and their effects in warfare. London, New York, Bombay, Calcutta: Longmans, Green, And Co. 1907. – 46 р.Since my recent book on mediæval archery and ancient weapons was issued, I have obtained a considerable amount of information concerning the projectile engines of the Greeks and Romans. I now print a concise account of the history, construction, and effects in warfare of these engines. In this summary the additional notes I have acquired are included. __Contents:__.Introductory notes on ancient projectile engines.The catapult.The balista.The trebuchet.Historical notes on ancient and mediæval siege engines and their effects in warfare.