The author, Clara Bloomfield Moore, financed his work for many years.
Opinions on Keely are still sharply divided over a century later - those who call him a free energy pioneer versus those who refer to the "Keely Motor Bubble" as a stock fraud.
Chapter XIX, "Latent Force in Interstitial Spaces - Electro-Magnetic Radiation - Molecular Dissociation," was written by Keely.