CINCHONA.

(GATHERING AND DRYING CINCHONA BARK IN A PERUVIAN FOREST.

THE

NATIONAL

ENCYCLOPEDIA:

A DICTIONARY OF UNIVERSAL KNOWLEDGE.

BY WRITERS OF EMINENCE IN

LITERATURE, SCIENCE, AND ART.

LIBRARY EDITION.

VOL. IV.

LONDON:

WILLIAM MACKENZIE, 69 LUDGATE HILL, E.C.;

EDINBURGH, AND GLASGOW.

P

2 4 FED 1971

LIST OF PLATES.-VOL. IV.

To be Bound at Commencement of Volume in Following Order.