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The Mastery of the Air by William J. Claxton
page 28 of 182 (15%)
standing quite still, head to wind. Unfortunately, half a gale
had sprung up, and the 24-horse-power engine was quite incapable
of conquering so stiff a breeze, and making its way home again.
After several gallant attempts to circle round the dome, Mr.
Spencer gave up in despair, and let the monster air-ship drift
with the wind over the northern suburbs of the city until a
favourable landing-place near Barnet was reached, where he
descended.

The Spencer air-ships are of the non-rigid type. Spencer air-ship
A comprises a gas vessel for hydrogen 88 feet long and 24 feet
in diameter, with a capacity of 26,000 cubic feet. The framework
is of polished ash wood, made in sections so that it can easily
be taken to pieces and transported, and the length over all
is 56 feet. Two propellers 7 feet 6 inches diameter, made of
satin-wood, are employed to drive the craft, which is equipped
with a Green engine of from 35 to 40 horse-power.

Spencer's air-ship B is a much larger vessel, being 150 feet long
and 35 feet in diameter, with a capacity for hydrogen of 100,000
cubic feet. The framework is of steel and aluminium, made in
sections, with cars for ten persons, including aeronauts,
mechanics, and passengers. It is driven with two petrol aerial
engines of from 50 to 60 horse-power.

About the time that Mr. Spencer was experimenting with his large
air-ship, Dr. Barton, of Beckenham, was forming plans for an even
larger craft. This he laid down in the spacious grounds of the
Alexandra Park, to the north of London. An enormous shed was
erected on the northern slopes of the park, but visitors to the
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