Prof. John M. Coulter, in The Dial: "Prof. Kerner has brought the most recent researches within reach of the intelligent reader, and in a style so charming that even the professional teacher may learn a lesson in the art of presentation.... It is such books as this that will bring botany fairly before the public as a subject of absorbing interest; that will illuminate the botanical lecture-room."

Prof. Chas. R. Barnes, in The Botanical Gazette: "This lucidity, and the excellent illustrations, not only will introduce the non-botanical reader to the science of botany, but should serve as a lesson to the professional botanist in the art of presentation."

The Nation: "He has succeeded in constructing a popular work on the phenomena of vegetation which is practically without any rival."

GUIDE TO THE STUDY OF INSECTS

AND A TREATISE ON THOSE

INJURIOUS AND BENEFICIAL TO CROPS

FOR THE USE OF

COLLEGES, FARM-SCHOOLS AND AGRICULTURISTS

By ALPHEUS S. PACKARD, M.D.

With 685 illustrations. Ninth edition. xii + 715 pp., 8vo, $5.00 net