Balloons, Airships, and Flying Machines — A Reader’s Guide

From Hearth to Sky: The Montgolfier Spark

The book’s opening chapter anchors the entire history in a single, almost accidental observation. Stephen Montgolfier, watching smoke rise, asks: “What is the hidden power that makes those curling smoke-wreaths rise upwards?” Bacon presents the brothers’ subsequent experiments as a series of small, tangible steps—a paper bag held over a fire, a chafing-dish fastened to the bag’s mouth—rather than a sudden leap. The widow’s practical suggestion, which finally makes the bag rise to the ceiling, is given as much weight as any theoretical insight. This pattern of ad hoc ingenuity recurs throughout the book: Bacon consistently highlights the makeshift, the improvised, and the collaborative nature of early aeronautics.

Siege, Science, and the Pigeon Post

Bacon devotes considerable space to the balloons of the Siege of Paris (1870–71), and her account is rich with specific, almost logistical detail. She notes that between sixty and seventy balloons left the city, carrying nearly 200 people and two and a half million letters weighing about ten tons. But the most striking detail is the pigeon post: messages were photographed onto tiny scraps of film, each capable of holding 2,500 messages of twenty words, then attached to pigeons’ tail feathers in goose quills. One bird carried eighteen films containing 40,000 messages. Bacon does not merely list these facts; she uses them to illustrate the desperate ingenuity of the besieged Parisians. She also records the human cost: balloons blown out to sea, aeronauts captured, and the nightly ascents under enemy fire.

The Balloon as Instrument: Scientific Ascents

Bacon treats the balloon not only as a vehicle of adventure but as a tool for research. She describes early scientific ascents—some to study the atmosphere, others to observe celestial events—and emphasizes the risks taken by men like the astronomer Janssen, who smuggled his telescope out of Paris by balloon to observe a total eclipse in Algeria. The book’s structure, moving from origin stories to wartime use to scientific applications, mirrors the balloon’s own evolution from curiosity to instrument. Bacon’s prose remains grounded in the physical: the weight of a film (less than one gramme), the number of messages per bird, the cold and fog that prevented pigeons from returning. These concrete numbers anchor the narrative in verifiable fact.

Toward the Flying Machine: Airships and Prophecy

The final chapters shift from balloons to dirigibles and flying machines, though the excerpts provide only the chapter titles and a brief glimpse of the conclusion. Bacon’s 1905 vantage point places her at a moment when powered flight was still experimental; the Wright brothers’ first flights had occurred only two years earlier. The book’s structure—beginning with the Montgolfiers’ paper bag and ending with “The Flying Machine”—suggests a narrative of progress, but Bacon does not simply celebrate. She notes failures, accidents, and the bravery of “unskilled pilots” facing enemy fire. The closing chapter likely offers a cautious look forward, but the excerpts do not reveal its contents. Readers should note that Bacon writes as a contemporary observer, not a historian with hindsight.

Bacon’s book is best read as a document of its time: a 1905 survey that captures the excitement and peril of early aeronautics without the benefit of later knowledge. Her focus on concrete details—the weight of a message film, the number of balloons that escaped Paris—gives the narrative a documentary texture. Readers interested in the social and technological context of pre-WWI flight will find a wealth of specific, well-chosen anecdotes, though they should not expect a comprehensive technical treatise. The book’s strength lies in its human-scale stories, from the Montgolfiers’ fireside to the astronomer’s desperate gamble.

Years cataloguing the aeronautics shelf, I grew fond of Gertrude Bacon’s quiet awe before the Montgolfiers’ paper-bag flights. Then, shelving nearby, her cousin’s A system of pyrotechny — Text and Context — two books sharing a spark, really. Fire lifting silk, or bursting in coloured stars, both are just patient human hands teaching the sky to answer back.