A Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Light, for Students of every Age.

By ALFRED M. MAYER and CHARLES BARNARD.

II.—SOUND.

A Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of Sound, for the Use of Students of every Age.

By ALFRED MARSHALL MAYER,

Professor of Physics in the Stevens Institute of Technology; Member of the National Academy of Sciences; of the American Philosophical Society, Philadelphia; of the American Academy of Arts and Sciences, Boston; of the New York Academy of Sciences; of the German Astronomical Society; of the American Otological Society; and Honorary Member of the New York Ophthalmological Society.

In Active Preparation:

III.Vision and the Nature of Light.
IV.Electricity and Magnetism.
V.Heat.
VI.Mechanics.
VII.Chemistry.
VIII.The Art of experimenting with Cheap and Simple Instruments.

LIGHT: