Vol. I. Cloth, 670 pp., with 1476 woodcuts, 8vo, $7.50 net
Vol. II. Cloth, 283 pp., with 373 woodcuts, $3.00 net

Note.—This English edition has been enlarged and revised by the author and editor in collaboration with the following specialists: C. E. Beecher, J. M. Clarke, W. H. Dall, G. J. Hinde, A. Hyatt, J. S. Kingsley, H. A. Pilsbry, C. Schuchert, S. H. Scudder, W. P. Sladen, E. O. Ulrich, C. Wachsmuth, A. S. Woodward, E. C. Case, J. B. Hatcher, H. F. Osborn, S. W. Williston, F. A. Lucas.

A Text-book of General Bacteriology

By WILLIAM DODGE FROST, Ph.D., Associate Professor of Bacteriology in the University of Wisconsin; and EUGENE FRANKLIN McCAMPBELL, Ph.D., Associate Professor of Bacteriology in the Ohio State University

Cloth, 340 pp., $1.60 net

Comparative Anatomy of Vertebrates

Adapted from the German of Dr. ROBERT WIEDERSHEIM, Professor of Anatomy, and Director of the Institute of Human and Comparative Anatomy in the University of Freiburg-in-Baden. By W. N. PARKER, Ph.D., Professor of Zoölogy at the University College of South Wales and Monmouthshire in the University of Wales

Cloth, 576 pp., 8vo, $3.75 net

Text-book of the Embryology of Man and Mammals

By Dr. OSCAR HERTWIG, Professor extraordinarius of Anatomy and Comparative Anatomy, Director of the II Anatomical Institute of the University of Berlin. Translated from the Third German Edition by EDWARD L. MARK, Ph.D., Hersey Professor of Anatomy in Harvard University