LIGHT AND ELECTRICITY:

NOTES

OF

TWO COURSES OF LECTURES BEFORE THE ROYAL
INSTITUTION OF GREAT BRITAIN.

BY

JOHN TYNDALL, LL. D., F. R. S.,

AUTHOR OF "HEAT AS A MODE OF MOTION," "LECTURES ON SOUND,"
99 66 FRAGMENTS OF
SCIENCE FOR UNSCIENTIFIC PEOPLE," "HOURS OF EXERCISE IN THE ALPS,"

ETC., ETC.; PROFESSOR OF NATURAL PHILOSOPHY IN THE

ROYAL INSTITUTION OF GREAT BRITAIN.

CR

NEW YORK:

D. APPLETON AND COMPANY,

549 & 5 51 BROADWAY.