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Excerpt ​

Excerpt from The Dominion of the Air: The Story of Aerial Navigation, by John M. Bacon

Five additional balloons at that time in readiness were never required
for the risky service for which they were designed.

There can be little doubt that had the siege continued a more elaborate
use of balloons would have been developed. Schemes were being mooted to
attempt the vastly more difficult task of conveying balloons into
Paris from outside. When hostilities terminated there were actually six
balloons in readiness for this venture at Lisle, and waiting only for
a northerly wind. M. de Fonvielle, possessed of both courage and
experience, was prepared to put in practice a method of guiding by a
small propelling force a balloon that was being carried by sufficiently
favouring winds within a few degrees of its desired goal--and in the
case of Paris the goal was an area of some twenty miles in diameter.
Within the invested area several attempts were actually made to control
balloons by methods of steering. The names of Vert and Dupuy de Lome
must here be specially mentioned. The former had elaborated an invention
which received much assistance, and was subsequently exhibited at the
Crystal Palace. The latter received a grant of L1,600 to perfect
a complex machine, having within its gas envelope an air chamber,
suggested by the swimming bladder of a fish, having also a sail helm and
a propelling screw, to be operated by manual labour.

The relation of this invention to others of similar purpose will be
further discussed later on. But an actual trial of a dirigible craft,
the design of Admiral Labrousse, was made from the Orleans railway
station on January 9th. This machine consisted of a balloon of about the
standard capacity of the siege balloons, namely some 70,000 cubic feet,
fitted with two screws of about 12 feet diameter, but capable of being
readily worked at moderate speed. It was not a success. M. Richard, with
three sailors, made a tentative ascent, and used their best endeavours
to control their vessel, but practically without avail, and the machine
presently coming to earth clumsily, a portion of the gear caught in the
ground and the travellers were thrown over and roughly dragged for a
long distance.

Explanation ​

Detailed Explanation of the Excerpt from The Dominion of the Air: The Story of Aerial Navigation by John M. Bacon ​

Context of the Source ​

The Dominion of the Air (1902) by John M. Bacon is a historical account of early aeronautics, focusing on the development of balloons and dirigibles (steerable airships) in the 19th century. The excerpt discusses the use of balloons during the Siege of Paris (1870–1871), a pivotal event in the Franco-Prussian War, when the city was cut off from the outside world by Prussian forces. Balloons became a crucial means of communication and transport, carrying mail, officials, and even carrier pigeons out of the besieged city.

The passage highlights the experimental nature of early aerial navigation, particularly the attempts to create dirigible (steerable) balloons—a major technological challenge of the time. While free-floating balloons had been used successfully, controlling their direction remained an unsolved problem.

Themes in the Excerpt ​

  1. Innovation Under Pressure

    • The Siege of Paris forced rapid experimentation in balloon technology. The excerpt describes how necessity drove inventors to attempt steerable balloons, even though the science was still in its infancy.
    • The mention of "schemes being mooted" (discussed) and "methods of steering" shows a sense of urgency and creativity in wartime.

  2. The Limits of Early Aeronautical Engineering

    • The passage underscores the trial-and-error nature of early flight. Inventors like Vert, Dupuy de Lôme, and Admiral Labrousse tried different mechanisms (sails, propellers, air chambers) to control balloons, but with limited success.
    • The failed test of Labrousse’s dirigible (January 9, 1871) illustrates the danger and unpredictability of these experiments.

  3. Human Courage and Scientific Ambition

    • Figures like M. de Fonvielle (a known aeronaut) and the unnamed sailors who tested Labrousse’s machine demonstrate bravery in the face of unknown risks.
    • The financial and institutional support (e.g., Dupuy de Lôme receiving £1,600) shows that governments and scientists were investing in aerial navigation as a future technology.

  4. The Transition from Passive to Controlled Flight

    • The excerpt marks a historical turning point—the shift from uncontrolled balloons (at the mercy of winds) to dirigibles (attempting mechanical steering).
    • This foreshadows later developments in airships and aircraft, making it a key moment in aviation history.

Literary Devices & Stylistic Features ​

  1. Technical Precision & Historical Detail

    • Bacon writes with scientific exactitude, providing specifics like:
      • "70,000 cubic feet" (balloon capacity)
      • "two screws of about 12 feet diameter" (Labrousse’s design)
      • "L1,600" (funding for Dupuy de Lôme)
    • This lends credibility and immerses the reader in the engineering challenges of the time.

  2. Contrast Between Hope and Failure

    • The passage builds anticipation with phrases like:
      • "Schemes were being mooted to attempt the vastly more difficult task..."
      • "M. de Fonvielle... was prepared to put in practice a method of guiding..."
    • But then undercuts it with the clumsy failure of Labrousse’s test:
      • "the machine presently coming to earth clumsily... the travellers were thrown over and roughly dragged..."
    • This juxtaposition emphasizes the gap between ambition and reality in early aviation.

  3. Metaphors & Analogies

    • Dupuy de Lôme’s "air chamber, suggested by the swimming bladder of a fish"
      • This biological analogy helps readers visualize how the balloon’s buoyancy might be controlled, much like a fish adjusts its depth.
    • The description of the balloon’s "goal" as "an area of some twenty miles in diameter"
      • Highlights the imprecision of early navigation—even a "controlled" balloon had a huge margin of error.

  4. Dramatic Narration of the Failed Test

    • The Labrousse dirigible experiment is described almost like a miniature disaster story:
      • "a tentative ascent... used their best endeavours... practically without avail..."
      • "the machine... coming to earth clumsily... roughly dragged for a long distance."
    • The vivid, almost cinematic description makes the failure visceral, reinforcing the perils of experimentation.

  5. Foreshadowing Future Developments

    • The line "The relation of this invention to others of similar purpose will be further discussed later on" suggests that these failed attempts were stepping stones toward later successes (e.g., the Zeppelin, Wright brothers).
    • This historical perspective frames the excerpt as part of a larger narrative of progress.

Significance of the Excerpt ​

  1. Historical Importance

    • The Siege of Paris was one of the first large-scale uses of balloons in warfare, proving their potential for reconnaissance and communication.
    • The experiments described here were precursors to modern dirigibles and airships, influencing later pioneers like Ferdinand von Zeppelin.

  2. Scientific & Engineering Legacy

    • The steering mechanisms (sails, propellers, air chambers) tested during the siege were early solutions to the problem of aerial navigation.
    • The failures highlighted the need for better propulsion and control systems, which would later be addressed with internal combustion engines and aerodynamics.

  3. Cultural Impact on Aviation

    • The public fascination with balloons (e.g., exhibitions at the Crystal Palace) helped popularize aeronautics as a field of innovation.
    • The courage of early aeronauts (like Fonvielle and the sailors) became part of the romanticized history of flight, inspiring later aviators.

  4. Military & Strategic Implications

    • The excerpt shows how war accelerates technological development. The desperation of the siege pushed inventors to test risky, unproven ideas.
    • This foreshadows the role of aviation in 20th-century warfare, from World War I planes to modern drones.

Line-by-Line Breakdown of Key Sections ​

  1. "Five additional balloons... were never required for the risky service for which they were designed."

    • Meaning: Balloons were prepared for dangerous missions (likely carrying messages or spies out of Paris), but the siege ended before they were needed.
    • Significance: Shows that balloons were a last-resort technology, used only when traditional methods failed.

  2. "Schemes were being mooted to attempt the vastly more difficult task of conveying balloons into Paris from outside."

    • Meaning: Instead of just escaping Paris, they wanted to send balloons in—a much harder task due to wind direction.
    • Significance: Demonstrates ambition beyond survival—they were thinking of two-way communication.

  3. "M. de Fonvielle... was prepared to put in practice a method of guiding by a small propelling force..."

    • Meaning: Fonvielle believed a propeller could slightly adjust a balloon’s path if winds were favorable.
    • Significance: An early hybrid approach—using both wind and mechanical force.

  4. "The latter received a grant of L1,600 to perfect a complex machine, having within its gas envelope an air chamber..."

    • Meaning: Dupuy de Lôme’s design included an internal air bladder (like a fish’s swim bladder) to control altitude, plus sails and a propeller.
    • Significance: Shows how inventors borrowed from nature (biomimicry) and combined multiple technologies.

  5. "It was not a success... the travellers were thrown over and roughly dragged for a long distance."

    • Meaning: The Labrousse dirigible crashed, injuring the crew.
    • Significance: A harsh reminder that early aviation was dangerous and unpredictable.

Conclusion: Why This Excerpt Matters ​

This passage is more than just a historical footnote—it captures a pivotal moment when humans first dared to control the skies. The failed experiments described here were necessary steps toward modern aviation. The excerpt also reflects broader themes:

  • Human ingenuity under pressure (war as a catalyst for innovation).
  • The fine line between success and failure in scientific progress.
  • The courage of early pioneers who risked their lives to push boundaries.

Bacon’s writing immerses the reader in the technical, human, and historical dimensions of early flight, making it a compelling snapshot of a world on the brink of aerial revolution.