His alternating-current transformer.

Induction coils and their use in producing the Röntgen rays.

Edison's invention of the fluoroscope.

Faraday's gift to commercial science of the electric motor.

His dynamo-electric machine.

Modern electric transmissions of power.

Tesla's multiphase alternating-current motor.

Faraday's electric generator and motor.

The telephone, aid given by Faraday's discoveries in the invention and
use of the transmitter.

Modern power-generating and transmission plants a magnificent
testimonial to the genius of Faraday.

Death and honors.



RUDOLF VIRCHOW.

MEDICINE AND SURGERY.