In his magnetic engine he attempted to use the ether only as a medium for "sympathetic vibration associated positively and negatively with the polar stream." He states "Even as the magnet arouses the latent power in iron, my sympathetic polar harness will, by exciting concordance in the interstitial corpuscular domain, and then intermittently negatizing by association with the dominant thirds, the concordant 3rds, 6ths and 9ths, produce great power of rotation." [POLAR CURRENT, Keelys Mechanical Inventions and Instruments]