Lead Weights placed at first in the Car, to prevent any Fatigue in holding the Lines, and the Necessity of weighing, unless at the Time of Ascent, to determine the Power of Levity.
24. It may be proper to mention that Mr. Baldwin being resolved to prevent the disagreeable Circumstances of being weighed in the Presence of Thousand spectators, at a Time when it is uncertain whether the Balloon has acquired a sufficient Degree of Levity to raise his own Weight, together with the Instruments, Provisions, Ballast, and other Articles, all which are known or easily calculated; finding some Days before, his own Weight, and having calculated the rest as under[7]; he ordered his Servant, on the Day of the Excursion, to bring Lead Weights equal to the Sum total, with an overplus Weight of 10lb. for Levity of Ascent, and place them gradually in the Car, attached for that Purpose to the Balloon, soon after the Inflation began. By which Means the Gentlemen who held the Cords were quite at Ease: nor was there Occasion to tye the Lines during the Inflation, to Posts fixed in the Circumference of the Circle; nor consequently to cut them afterwards.
But it will be seen that Mr. Lunardi inflated the Balloon in a superior Manner.
25. All Things being thus prepared, Mr. Baldwin stepped into the Car: and finding, that, besides his own Weight, the Provisions, Articles, Ballast, &c. the Balloon woud support an additional Weight, and still rise with superior Levity; Mr. Lunardi put in 12lb. of additional Ballast, and guessed the encreased Levity at 10lb. more.
| Additional |  | Ballast | 12 |
| Levity | 10 | ||
—— | |||
22 | |||
| Added to the | 234 | ||
—— | |||
| Make the Sum | 256lb. | ||
All which added to the Weight of the Balloon, by Information only, as follows:
| Balloon varnished | 113 |
| Netting and Cords | 18 |
| Car and Hoops | 24 |
| Mended and added Parts | 5 |
| Grapple and Cable | 4 |
| —— | |
| 164 | |
| With the | 256 |
| Make the total Levity of the Gass to produce an Equilibrium, equal to | 420lb. |
The Weight of a Quantity of Air equal in Bulk to the Balloon, being secluded; and the Gass substituted in its Room.
Weight of Articles.
26. The Calculation of the Weight of Articles was, as follows: