“This was not the greatest danger. Archimedes had placed lofty and strong machines behind the walls, which suddenly letting fall vast beams, with an immense weight at the end of them, upon the ships, sunk them to the bottom. Besides this, he caused an iron grapple to be let out by a chain; the person who guided the machine having caught hold of the head of a ship with this hook, by the means of a weight let down within the walls, it was lifted up and set upon its stern, and held so for some time; then, by letting go the chain either by a wheel or a pulley, it was let fall again with its whole weight either on its head or side, and often entirely sunk. At other times the machines dragging the ship towards the shore by cords and hooks, after having made it whirl about a great while, dashed it to pieces against the points of the rocks which projected under the walls, and thereby destroyed all within it. Galleys, frequently seized and suspended in the air, were whirled about with rapidity, exhibiting a dreadful sight to the spectators; after which they were let fall into the sea, and sunk to the bottom, with all that were in them. “Marcellus, almost discouraged, and at a loss what to do, retired as fast as possible with his galleys, and sent orders to his land forces to do the same. He called also a council of war, in which it was resolved the next day, before sunrise, to endeavour to approach the walls. They were in hopes by this means to shelter themselves from the machines, which, for want of a distance proportioned to their force, would be rendered ineffectual. “But Archimedes had provided against all contingencies. He had prepared machines long before, as we have already observed, that carried to all distances a proportionate quantity of darts, and ends of beams, which being very short, required less time for preparing them, and in consequence were more frequently discharged. He had besides made small chasms or loop-holes in the walls at little distances, where he had placed scorpions, which, not carrying far, wounded those who approached, without being perceived but by that effect.