The Mode in which Bees Work 238 V. The Mode of Government of the Bees 242 VI. Wasps and Hornets 244 VII. The Silk-Worm 245 VIII. Spiders 246 IX. Locusts 248 X. Ants 250 _BOOK IX._ THE NATURAL HISTORY OF METALS. I. Gold 252 II. The Origin of Gold Rings 254 III. Coins of Gold 256 IV. Silver 260 V. Mirrors 261 VI. Instances of Immense Wealth 263 VII. Instances of Luxury in Silver Plate 265 VIII. Bronze 268 IX. Statues of Bronze 271 X. The most Celebrated Colossal Statues in the City 277 XI. Of the most Celebrated Works in Bronze, and of the Artists who Executed them 280 XII. Iron 287 XIII. An Account of Paintings and Colors 289 XIV. The Earliest Painters 292 XV. Artists who Painted with the Pencil 296 XVI. Various other Kinds of Painting 311 XVII. The Inventors of the Art of Modelling 313 XVIII. Works in Pottery 315 XIX. Sculpture 318 XX. Obelisks 323 CONCLUSION.—Italy 326 LIST OF ILLUSTRATIONS.