Induction-compensator
Manometer
Large wooden trumpet
Horn with elliptical section (see note)
Clay pipe-stems, used in experiments on Argon.
Inductor tube
Inductor tube
Lantern slides to illustrate a method of enhancing photographic gradation
Reflectors for short sound waves
Electrical interrupter
Electrical interrupter
Hughens gearing to illustrate electromagnetic induction
Zinc bell
Glass plate
1878