Of Rockets and their Appendages, 326 Sec. i. Of the Caliber and Proportion of Rockets, ib. ii. Of the Composition of Sky-Rockets, and Observations on its Preparation, and on other Subjects respecting rockets, 329 iii. Of the Heading of Rockets, 334 iv. Of the Decorations for Rockets, and the Manner of filling their Heads, 335 v. Of the Dimensions, and Poise of Rocket-Sticks, 336 vi. Of the Mode of Discharging Rockets, 337 vii. Of the Appendages, and Combinations of Rockets, 340 viii. Of Swarmers or Small Rockets, 343 ix. Of Scrolls for Sky-Rockets, and of Strung, Tailed, Drove, and Rolling Stars, 344 x. Of Line-Rockets and their Decorations, 345 xi. Of Signal Sky-Rockets, 347 CHAPTER VIII. Of Sundry Fire-works, denominated Air-works, 347 Sec. i. Of the Composition, and Mode of Forming large and small Gerbes, 348 ii. Of Paper Mortars, 349 iii. Of Mortars to throw Aigrettes, &c. 350 iv. Of Making Balloon Fuses, 357 v. Of the Mosaic and Common Tourbillon, 358 vi. Of Mortars for throwing Aigrettes, and the Manner of Loading and Firing them, 363 vii. Of Making, Loading, and Firing Pots des Brins, 364 viii. Remarks respecting Fire Pots, 365 CHAPTER IX. Of Particular Compositions, 367 Sec. i. Of Fire-Jets, or Fire-Spouts, ib. ii. Of Priming and Whitening Cases, and Remarks concerning Spunk and Touch Paper, 370 iii. Of Chinese Fire, 371 iv. Of Bengal Lights, 377 v. Of Roman Candles, 380 vi. Of Mosaic Simples, 381 vii. Of Mosaic Tourbillons, 382 viii. Of Hydrogen Gas in Fire-works, 383 CHAPTER X.