Of Aquatic Fire-works, 442 Sec. i. Of Water Rockets, 443 ii. Of Pipes of Communication, ib. iii. Of Horizontal Wheels for Water, 444 iv. Of Water Mines, ib. v. Of Fire Globes for the Water, 445 vi. Of Odoriferous Water Balloons, 446 vii. Of Water Balloons, 447 viii. Of Water Squibs, 448 ix. Of the Water Fire-Fountain, ib. x. Of Swans and Ducks, to discharge Rockets in Water, ib. xi. Of Discharging Rockets under Water, 449 xii. Of the Representation of Neptune in his Chariot, 450 xiii. Of the Representation of a Sea-Fight with small Ships, and the Preparation of a Fire-Ship, 451 CHAPTER XII. Of the Arrangement of Fire-works for Exhibition, 452 PART IV. Military Pyrotechny, 456 CHAPTER I. Observations in General, 456 Sec. i. Of Cartridges, 462 ii. Of Cannon Cartridges, 467 CHAPTER II. Of Matches, 471 Sec. i. Of Slow Match, ib. ii. Of Priming Tubes, 475 iii. Of Quick Matches, 477 CHAPTER III. Of Port-Fires, 479 CHAPTER IV. Of Fuses for Shells, Howitzes, and Grenades, 481 Sec. i. Of the Method of Charging the Fuses of Bombs or Shells, 482 ii. Of Loading Shells, Howitzes, and Grenades, 484 iii. Of Fuses with Dead Light, 485 iv. Of the Dimensions of Fuses, and the Dimensions and Charge of Bombs, Howitzes, and Grenades, 487 CHAPTER V.