The rhythmic catalysis of Bredig produces an electrical current of action between the mercury and the water just like that produced by the rhythmic contraction of the heart, and this current may be registered in a similar way by means of the einthoven galvanometer.
"The Mechanism of Life"
Stéphane Leduc
"Back of this screen," he went on, indicating it in the corner of the room, "I have placed what is known as the string galvanometer, invented, or, perhaps better, perfected by Dr. einthoven, of Leyden.
"Guy Garrick"
Arthur B. Reeve
This machine is known as the einthoven 'string galvanometer,' invented by that famous Dutch physiologist of Leyden.
"The Dream Doctor"
Arthur B. Reeve
