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About this book

What if sound could power an engine—and a loyal supporter could make you feel the force of that promise?

In Keely and His Discoveries, Clara Jessup Moore presents the case for John Worrell Keely, a self-taught Philadelphia inventor. He claims that vibration can release energy stored in matter, promising engines that need neither coal nor steam. Moore stands beside him as he faces critics who doubt his devices and question his promises.

The book moves from demonstrations in Keely's workshop to ideas about sympathetic vibration, ether, and hidden laws linking mind and matter. Moore writes as a believer, not a neutral observer. Keely's claims do not survive testing, but her defence offers a close view of the hopes surrounding them—and the language that gives those hopes shape.

What you’ll discover

  • An inventor without standing Meet a self-taught man who claims a path to power outside the scientific societies of his day.
  • Inside the Philadelphia workshop Follow accounts of demonstrations where visitors encounter Keely's devices and the promises attached to them.
  • The promise of vibration Explore how an effect of sound becomes the foundation for Keely's much broader claims.
  • Mind meets matter Trace the shift from proposed engines to a vision of hidden connections throughout the universe.
  • A supporter's conviction Hear Moore answer doubters and discover how loyalty shapes her portrait of an embattled inventor.

Who will love it

Readers who like the history of strange science, nineteenth century inventors, and the human drama of money, belief and doubt around a man who claimed to have found nature's hidden force.

What’s inside

The key ideas, in the 15-minute summary

  1. A patron defends an inventor
  2. Sound could unlock hidden energy
  3. Investors want an engine now
  4. Astonishment does not settle the evidence
  5. Ether connects matter and spirit
  6. Matching vibrations govern every substance
  7. The brain becomes a tuned instrument
  8. Cheap power promises a different future
  9. Harmony joins science and faith

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Biography & Letters

Keely and His Discoveries

by Clara Jessup Moore · 1893

A Philadelphia inventor says a tuning fork can split water into a force that lifts a cannon's shot and an airship.

Challenging5–10 hours to read20 languages

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“Discovery is not invention.”
From the bookKeely and His Discoveries

In short

What if a tuning fork could split a few drops of water into a force strong enough to lift a heavy lever, fire a cannon and, one day, float an airship? That is the claim at the center of Keely and His Discoveries.

Keely and His Discoveries by Clara Jessup Moore, the cover

Keely and His Discoveries at a glance

Reading time
About 8 h 55 min7 h 5 min fast, 10 h 40 min slow
Length
127,500 words
Library level
Challenging long sentences, a rich vocabulary
First published
1893by Clara Jessup Moore

Reading time at 238 words a minute (fast 300, slow 200). How long the classics take to read · Updated

From the 15-minute summary · Key idea 1

A patron writes to defend her inventor

The book is above all an act of loyalty. Mrs. Moore believes Keely has found something real, and she fears the world is about to lose it. Lawsuits, newspaper attacks and angry investors threaten to end his work.

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15-minute summary
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Details
First published
1893
Language
English
Level
Challenging

Cite this edition

Moore, Clara Jessup. Keely and His Discoveries. Library of Alexandria, 2026, libraryofalexandria.com/products/keely-and-his-discoveries.

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What is Keely and His Discoveries about?

It presents the inventor John Worrell Keely and his claim to have found an unknown force released by sound vibration. It gathers newspaper reports, testimony, letters and a philosophy of ether meant to explain his machines.

Who was John Keely and what was the Keely motor?

Keely was an inventor in Philadelphia who said that vibration could free energy stored in water and matter. The Keely motor was the engine he promised investors to use that force; demonstrations occurred, but reliable speed regulation and reversal remained unfinished.

Is Keely and His Discoveries a true story?

Keely and the events are real, and the book was written in the early 1890s by his patron. It is a defense of him, so it gives his side. Later investigators concluded his motor was a hoax.

The author

Clara Jessup Moore

American poet and philanthropist

Mrs. Bloomfield H. Moore was Clara Sophia Jessup Moore, an American author born in Westfield, Massachusetts, in 1824. She lived in Philadelphia and later in London, where she died in 1899. She wrote poetry and novels and published Keely and His Discoveries in 1893 under her married name.

“Discovery is not invention.”
Keely and His Discoveries, edison, epigraph to Chapter 5

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