Inside Out Library
How it flies; (1910)
Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 343
n the hands of experts. When inflating with coal-gas, the supply is usuallytaken from a large pipe adapted for the purpose. Ata convenient distance from the gas-main the ground 342 BALLOONS: HOW TO OPERATE, is mad© smooth, and the ground cloths are spread outand pegged down to keep them in place.… … .ci^w^i^ Balloon laid out in the circular method, ready for inflation. The valve is seenat the centre. The neck is at the right. ing the upper half of the sphere of the balloon, theopening of the neck projecting a few inches beyondthe rim of the circle. The hose from the gas-mainmay then be…Aeronautics
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