In Four Volumes, price 2l. 2s., or bound in 2 Vols., half-morocco, 2l. 10s.,
THE CYCLOPÆDIA OF NATURAL HISTORY.
This Cyclopædia, embracing the most interesting details of Natural History, presented in the most attractive form of scientific explanation, and illustrated with many hundreds of beautiful wood-engravings, will furnish a most desirable addition to every library. To the Medical Student the work is indispensable.
THE CYCLOPÆDIA OF ARTS AND SCIENCES
Is now in course of publication, in Monthly Parts, price 2s. 6d. each.—This Cyclopædia will be completed in Eight Volumes. Of these, Vols. I., II., III., IV., and V. are published, price 12s. each: Vol. VI. will be published in December: Vols. VII. and VIII. in 1861.
These Works, perhaps forming the most valuable and comprehensive Works of Reference in the language, published as a whole under the title of "The English Cyclopædia," are founded upon the valuable Copyright of the Penny Cyclopædia, which has always remained in the hands of Mr. Knight. The elaborate revisions, with the large additions, of the present work, have involved a new outlay for literary labour of not less than Seven Thousand Pounds, making the cost of literary production alone not far short of Fifty Thousand Pounds.