The Ten Books on Architecture

BOOK IX INTRODUCTION 251 THE ZODIAC AND THE PLANETS 257 THE PHASES OF THE MOON 262 THE COURSE OF THE SUN THROUGH THE TWELVE SIGNS 264 THE NORTHERN CONSTELLATIONS 265 THE SOUTHERN CONSTELLATIONS 267 ASTROLOGY AND WEATHER PROGNOSTICS 269 THE ANALEMMA AND ITS APPLICATIONS 270 SUNDIALS AND WATER CLOCKS 273 BOOK X INTRODUCTION 281 MACHINES AND IMPLEMENTS 283 HOISTING MACHINES 285 THE ELEMENTS OF MOTION 290 ENGINES FOR RAISING WATER 293 WATER WHEELS AND WATER MILLS 294 THE WATER SCREW 295 THE PUMP OF CTESIBIUS 297 THE WATER ORGAN 299 THE HODOMETER 301 CATAPULTS OR SCORPIONES 303 BALLISTAE 305 THE STRINGING AND TUNING OF CATAPULTS 308 SIEGE MACHINES 309 THE TORTOISE 311 HEGETOR'S TORTOISE 312 MEASURES OF DEFENCE 315 NOTE ON SCAMILLI IMPARES 320 INDEX 321 LIST OF ILLUSTRATIONS CARYATIDES FROM TREASURY OF CNIDIANS, DELPHI 6 CARYATIDES OF ERECHTHEUM, ATHENS 6 CARYATID IN VILLA ALBANI, ROME 6 CARYATIDES 7 PERSIANS 9 CONSTRUCTION OF CITY WALLS 23 TOWER OF THE WINDS, ATHENS 26 DIAGRAM OF THE WINDS 29