Then a second Pair, at such a Distance that the intermediate Part of the Cable, will float.
Repeat this Process, till the proper Effect is obtained; or the whole Ballast is discharged.
294. 4. The Car and Balloon may be hauled or wound down to the Surface of the Water: and the Ballast resumed, as the Balloon approaches the Shore.
294. 5. If it be found necessary, the Ballast may be discharged by cutting the thongs, gradually: or the cable, at once.
294. 6. If the Wind be contrary, and the Weather moderate; the Tide, or Stream may, by Calculation and Foresight, be made to serve the Purpose of the Aironaut, in towing the Ballast which floats on its Surface: and thus checking, or gently drawing the Balloon after it.
294. 7. In such Cases, the Aironaut woud do well in applying his propulsive Machinery.
A GENERAL OBSERVATION.
294. 8. To prevent the car of the Balloon from being drawn out of the Perpendicular, a Circumstance not infrequent; it is necessary to have some Contrivance, by which the Cable shall run throu’ a moveable Pulley, on a Swivel, in the Center above the Car; and that the Aironaut shall be able instantly, by a Screw, or otherways, to fasten the Pulley and Cable so tight, that the Stress shall remain on the Center above the Car, however forcibly the Cable may be stretched.
