| Pag. [16.] | lin. 6. | for salt, read salt-petre |
| [30.] | 12. | for ising glass, read isinglass |
| [35.] | 11. | for midling, read middling |
| [47.] | 15. | for ballóóns, read ballóón |
| [86.] | 26. | insert: to a rocket of eight ounces twenty-one strokes. |
| [115.] | 5. | for one eighth, read one inch one eighth |
| [152.] | 24. | for griandole, read girandole, |
| [ibid.] | 25. | for griandole, read girandole, |
| [172.] | 19. | for hoops, read hooks, |
| [203.] | 8. | add at I, nine inches from H, fix three pegs. |
| [243.] | 18. | for scrole, read scroll, |
A
TREATISE
ON
Artificial Fireworks.
SECT. I.
Of Saltpetre.