226 - 23 | διηνοιγμένον _a b c d_. | διενηνεγμένον? 227 - 21 | This passage is corrupt, but the MSS. give no light. 228 - 8 | ἐκτὸς | ἐντὸς _a b c d_. — - 41 | ἐν τοῖς αὐλοῖς _a b c d_.| τοῖς ἐν τοῖς αὐλοῖς? 229 - 30–40 | The reading of the text is evidently corrupt here, | but the MSS. do not supply means for correcting it: μίας | οὔσης may be a corruption of μενούσης; Hero speaks | elsewhere of a περόνη μένουσα. 232 - 14 | The text and all the MSS. read ὑπὸ; nevertheless ὑπὲρ | has been substituted in the translation. If the holes X | and R were _beneath_ the partition, the action of the | tubes would fail. [Illustration: Decorative floral border] INDEX. Air (atmospheric), 1. Adamant, 2. Anvil, 2. Archimedes, 9. Air-pump (condensing), 23. Altar, 26, 83. Apple, 62. Arrow, 62. Air-engine, 95. Bottle, 3. Bitumen, 5. Bronze, 7. Beam, balance, 11. Bar, 19. Bird, 29. Beam on an axis, 33. Ball tap, 36. Ball float, 43. Beam, 44. Bow, 62. Boiler, 72, 101, 102, 103. Buttons, 76. Bellows, (substitute for), 105. Bell-crank lever, 106. Cupping-glasses, 4. Coal-cinders, 5, 101, 102. Cook’s ladle, 21. Carpenters’ rule, 25. Chain, 32. Cork, 36. Coin, 37. Cock or tap, 41. Cylinders, (bored bronze), 44. Church organ, 105. Dew, 5. Divers, 8. Door of temple, 33. Dragon, 62. Earth, 1. Extinguisher, 33. Engine, (steam-), 72. Fire, 1. Force, 3. Funnel, 29. Fir-cone, 70. Flagon, 86. Finger-organ, keys, 105. Glass, 3, 68, 74, 75, 76, 79, 95. Globe, 7, 20. Groove, 17. Hammer, 2. Heat, 2. Horn-shavings, 3. Handle, 17. Hinges, 25. Holy water, 49. Hercules, 62. Hot-air blast, 100, 101. Iron, 10. Jar, 22. Kettle-drum, 32. Key, 41. Light, 9. Libation, 26. Lathe for turning, 32. Lead, 36. Lamp-wick, 52. Lever-beam, 94. Metal plate, 7. Marine torpedo, 10. Nut, (substitute for), 17. Oil, 6. Owl, 30. Oven, 94. Organ-pipes, 105. Pores, 9. Priest, 26, 83. Priestess, 26. Pulley and rope, 32. Piston, turned, (metallic), 44. Piston-rods, 44. Pan, 47. Pinion, (toothed), 52. Poised cup, 66. Quicksilver, 58. Rod, 32. Rack, (toothed), 52. Racks, 109. Sand, 2. Sponge, 3. Smoke, 5. Steam, 5, 68, 69, 72, 100. Sulphur, 5. Sun, 5. Sun’s rays, 9. Suction, 11. Solder, 17. Sliding-frame, 17. Screw, 17. Sieve, 19. Spout, 73. Syringe, 80. Serpent, 83. Steel-yards, 87. Shrine, 93. Spur wheels, 93. Sparrow, 104. Springs, 106. Sectors, (toothed), 109. Tube, 7. Tin, 8. Trumpet, (mouthpiece and bell), 32. Three-way cock, 51. Trigger, 62. Thyrsus, 70. Turn-table, 95. Triton, 103.