Raiders Invisible — Reading Companion

(2 User reviews)   351
Hall, Desmond Winter, 1909-1992 Project Gutenberg 2009 Not confirmed
Science fiction Readers of public-domain and historical texts
Project Gutenberg digital edition en

Edition facts

Words 15,791
Reading time 69 min
Text sections 2

The catalog record for Raiders Invisible — Reading Companion provides practical reading context through 15,791 words, 1 hr 9 min estimated reading time, and 2 detected text sections.

The text analysis averages about 17.2 words per sentence, while the detected sections provide another way to judge how the source is divided.

Project Gutenberg metadata also associates the work with “Science fiction,” connecting these edition facts with the source record’s subject description.

In this 1931 pulp serial, pilot Chris Travers uncovers a foreign plot using invisibility technology to disable the U.S. Navy's airships and threaten the Panama Canal. The excerpts show a focus on technical gadgetry and military procedure, with a skeleton-rendering invisibility device and a map of the Gatun Spillway as key plot points.
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Editorial Edition Score 4.5/5

Calculated from edition completeness, EPUB availability, text structure and catalogue metadata. Not a user rating.

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  • Description quality20 pts
  • Title & short description10 pts
  • Source metadata20 pts
  • Text length15 pts
  • Chapters / structure15 pts
  • EPUB file integrity20 pts

Total of 100 points, scaled to a 2.5-5.0 range. Editions with an empty description or a missing EPUB file are not scored.

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Read the Text

There were old pals on her--buddies, gone in a flash of time!

This wasn't a war game. This was tragedy, stark before his eyes.

The Black Fleet forgot its mimic battle. Radio telephone messages winged over the horizon to the approaching Blue Fleet. The Black dreadnoughts hove to; launches with ashen-faced men in white manning them dropped overboard; a dozen destroyers rolled in the swells around a crumbled, charred egg-shell that but minutes before had been an omnipotent giant of the sky.

Chris Travers, aloft in sunlight suddenly bereft of its beauty, jammed the stick of the scout full over. He could do nothing, he knew. He could only return to the ZX-1 and tell the story of its sister as he had seen it.

But why, he wondered as he flew almost blindly, had the ZX-2 so quickly flamed to oblivion? The helium of its inner bags had been uninflammable, as had the heavy oil of its fuel tanks; the ten engines were Diesels, and hence without the ordinary ignition system and gasoline. Safety devices by the score had been installed on board; nothing had been overlooked. And the weather, perfect.

It was uncanny. It seemed totally unexplainable.

Swarms of planes droned between sea and sky, all speeding in the one direction, west, to where the crumpled remnants of a dirigible were slipping quickly beneath the billows, beyond the sight of man. Planes of war game umpires, of officials, of newspaper correspondents and photographers. And soon a spectral, gleaming wisp of silver nosed out of the east, and the lone scout flying east dropped in altitude to meet its mother.

Mechanically, his mind elsewhere, Chris shoved the button which reared the automatic clamp behind the cockpit in preparation for affixing the scout to the plane rack beneath the ZX-1. The dirigible, far in advance of the Blue Fleet, was roaring along at its full one hundred and fifty to hover over the grave of its sister. Chris eyed its course and changed his. To jockey into the rack, he had to pass the dirigible and come up underneath from its rear.

The air giant roared closer. As the distance between then loosened, Chris's brow wrinkled and he swore softly in puzzlement.

"Now, just what's wrong with them?" he exclaimed, "The darned zep isn't flying straight! She's wobbling in her course!"

It was hardly apparent, but true. Ever so slightly, the snub nose of the ZX-1 was swaying from side to side as it sped through the air; ever so slightly, her massive stern directional-rudders were wavering.

She was less than a mile away now. At that time, there were no other planes in sight; none flying in that vicinity save Chris's. He glued his eyes to the telescopic sight. A moment later, sheer horror swept his face.

The scout leaped as its throttle rammed down. The gleaming, thousand-foot shell of the ZX-1 roared by it at equal altitude, making it a puny fly-speck in the sky. But the fly-speck was faster. It turned in a screaming bank; it straightened; it lunged back after the swaying, retreating mammoth like a whippet, lower, now, than its quarry. It maneuvered expertly as it gained, for one of the best pilots of the service was at its controls, and there were deep lines graven in his face, lines of anguish and intolerable suspense.

Through the telescopic sight, Chris had not seen a single white-clad figure standing beside the glass ports of the dirigible's control car. But he had seen, slung from the rack along her belly, a single plane--the same rather peculiar-looking plane he had seen hanging beneath the rack of the ZX-2 a few minutes before she had gone down in flames!

And in that plane, he knew surely, was the answer to the mystery.

Speed cut to just a trifle more than the dirigible's. Chris passed a few feet underneath the huge expanse of her lower directional rudder. From so close, its uncontrolled wavering was terrifying.

His faculties were concentrated on the task of sliding the scout's clamp into the groove of the plane rack, but he was also surveying the lone airplane hanging from it. A powerful machine, painted in Navy colors, a peculiar knob on the upper side of each half of the top wing gave it its unfamiliar appearance. Its pilot was obviously aboard the dirigible, working....

The opening pages of Raiders Invisible drop the reader into a naval war game off the Panama Canal in March 1935, with Lieutenant Christopher Travers piloting a scout plane from the dirigible ZX-1. The prose is brisk and detail-oriented, describing the "spider ladder," the "automatic clamp," and the "full-throated roar" of the motor. The war game is explicitly a political gesture—"a gesture strong with the hint of steel"—aimed at a foreign nation. But Travers, described as having a "tanned, boyish face" and "narrowed gray eyes," is initially absorbed in the thrill of the exercise, not the geopolitical stakes.

Invisibility as a Technical Process

The story’s central gimmick—invisibility—is presented not as magic but as a scientific procedure grounded in period physics. The villain Istafiev explains it as "a simple adaptation of Roentgen's theories" (X-rays), involving a "refractive index lowered to that of air." The demonstration scene is clinical: a dynamo drones, "intercrossing flame-tongues" produce "ribbons of color," and a skeleton becomes visible before flesh hazily reappears. The invisible gear is a "cylinder from some oddly sparkling, almost transparent material" strapped to a man’s chest, with a nozzle for delivering gas. The text lingers on the mechanics—the lever, the grayish vapor, the bleaching substance—rather than on wonder or horror. This treatment aligns the story with the "Machines, Inventions & Early Science Fiction" category, treating the device as a plausible extension of 1930s laboratory research.

Military Hierarchy and Jargon

The excerpts are steeped in naval terminology and chain-of-command formality. The Admiral issues orders via radio: "Proceed ahead to locate the enemy's position." The fleet is divided into Blue and Black, with specific ship types listed: "destroyers, submarines, cruisers, battleships, aircraft carriers." The dirigibles are named ZX-1 and ZX-2, fresh from Akron hangars. Travers thinks in terms of his "job of spotting the van of the Black Fleet." Even the villain’s dialogue carries a formal, accented cadence: "The refractive index... iss being raised again." This military precision contrasts with the fantastic invisibility device, grounding the story in a recognizable institutional setting. The catalog subject "Science fiction" is accurate, but the excerpts show the genre is delivered through a lens of procedural realism.

The Gatun Spillway as a Strategic Target

Late in the excerpts, the plot pivots from airship sabotage to a larger threat: the Panama Canal’s Gatun Spillway. Istafiev displays a "detailed map" with "two broad lines" and a "thick black arrow" pointing to this vulnerable point. Travers recognizes it immediately and thinks, "It can't go through! It can't!" The spillway is described as "the most vulnerable, unguarded and vital point" whose destruction would "put the whole intricate Canal hopelessly out of commission." This shift from invisible gas attacks on dirigibles to a concrete infrastructure target escalates the stakes from tactical to strategic. The excerpts do not reveal whether the attack succeeds, but the map scene establishes a clear objective for the antagonist and a desperate resolve for the protagonist.

Readers should note that the excerpts cover only the setup and a single demonstration of the invisibility device. The full story likely follows Travers as he attempts to thwart the spillway attack, but the text provided does not confirm his success or the fate of the invisible raiders. Pay attention to how the author balances technical exposition with action—the invisibility scenes are described in detail, while the military maneuvers are brisk. The story’s brevity (under 16,000 words) suggests a fast-paced narrative that prioritizes gadgetry and suspense over character development.

Reading about Chris Travers staring at that Gatun Spillway map reminded me of a rainy afternoon when I traced an old atlas with my finger, wondering at all the places I’d never see. The Last American A Fragment from the Journal of Khan-li, Prince of Dimph-yoo-chur and Admiral in the Persian Navy — Edition Insights stirred that same quiet ache — not for adventure, but for the strange, final loneliness of a world observed from far away.

Mila Ramirez
2 weeks ago

Owen Miller
1 month ago

4.5
4.5 out of 5 (2 User reviews )

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