THE
CABINET CYCLOPÆDIA.
conducted by the
REV. DIONYSIUS LARDNER, LL. D. F. R. S. L. & E.
M. R. I. A. F. R. S. Ast. F. L. S. F. Z. S. Hon. F. C. P. S. &c. &c.
assisted by
EMINENT LITERARY AND SCIENTIFIC MEN
Natural Philosophy.
A PRELIMINARY DISCOURSE
on
THE STUDY OF NATURAL PHILOSOPHY.
by
J. F. W. HERSCHEL, ESQ. M. A.
of St. John's College, Cambridge.
LONDON:
printed for
LONGMAN, REES, ORME, BROWN, AND GREEN,
paternoster-row;
AND JOHN TAYLOR,
Upper Gower Street.
1831.
