Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . ing. To the right of the basket is seenthe ballast-sand, which has just been thrown out. bottom was very evident on the occasion of the second journey,when the gas streamed out in great volumes under the diminishedpressure. After Robert had landed, he had forgotten to take onboard a corresponding quantity of ballast. At starting he hadfilled the car with as many sacks of sand as he could carry, but heforgot to give the matter further attention. It is imp
Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . ing. To the right of the basket is seenthe ballast-sand, which has just been thrown out. bottom was very evident on the occasion of the second journey,when the gas streamed out in great volumes under the diminishedpressure. After Robert had landed, he had forgotten to take onboard a corresponding quantity of ballast. At starting he hadfilled the car with as many sacks of sand as he could carry, but heforgot to give the matter further attention. It is impossible so toconstruct a balloon that the gas shall not be able to escape throughthe substance composing the walls. This is due to a property ofgases called diffusion, of which mention will be made hereafter. 24 AIESHIPS PAST AND PEE SENT. Charles balloons, which were called the Charliere, the Charlotte, and the Kobertine, had been completely success-ful, and had altogether eclipsed the efforts of Montgolfier. TheKing of France ordered a medal to be struck on which Charleshead should figure beside those of the brothers Montgolfier, and. Fig. 13.—The Boziere, constructed by Pilatie de Eozier. in this way he proposed to do honour to all the inventorssimultaneously. The balloons, called Bozieres, which were made by Pilatre deEozier, were even less successful than those of the hot air was anxious to have the distinction of being the first tocross the English Channel. But he was anticipated by Blanchard,whose flying car has been already mentioned, and who had sincethose days become a professional balloonist. A number ofascents had been made in different places on the Continent, and MONTGOLFIEBES, CHARLIERES, AND ROZIERES. 25 he now proposed to make the journey from Dover to Calais. Astart was made at Dover on January 7th, 1785, in company withan American doctor named Jeffries. He took with him a varietyof useless things in the shape of oars, provisions, and much
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