THE BANISHMENT OF NIGHT
(p. 221). Davy and the electric light. The quotation here given is
reproduced from vol. III., pp. 234, 235. The very great importance
and general interest of the subject seem to justify the repetition,
descriptive of this first electric light. Davy's original paper was
given at the Royal Institution in 1810.
(p. 237). "Peter Cooper Hewitt--Inventor," by Ray Stannard Baker, in
_McClure's Magazine_, June, 1903, p. 172.
In connection with the problem of color of the light emitted by Mr.
Hewitt's mercury-vapor tube, the chapter on "Newton and the Composition
of Light" (vol. II., p. 225 _seq._) may be consulted. Also "Modern
Theories of Heat and Light," vol. III., p. 206 _seq._