Preliminary Discourse on the Study of Natural Philosophy
London: Longman Press, 1830. First edition. Hardcover. 12mo. vii, 372 pp. Decorative brown cloth with gilt lettering to spine. Illustrated title page. Exhaustive study of Natural Philosophy by the English mathematician, astronomer, chemist, inventor, and experimental photographer. Herschel was the originator of the "Julian day" system in astronomy. Part I...... More