Vitruvius The Ten Books on Architecture (Vitruvius, Herbert Langford Warren etc.)

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Vitruvius BOOK VI BOOK VI Vitruvius CHAPTER XV HEGETOR’S TORTOISE 1. THERE is also another kind of tortoise, which has all the other details as described above except the rafters, but it has round it a parapet and battlements of boards, and eaves sloping downwards, and is covered with boards and hides firmly fastened in place. Above this let clay kneaded with hair be spread to such a thickness that fire cannot injure the machine. These machines can, if need be, have eight wheels, should it be ne…