ON ORTHOGENESIS. By Th. Eimer. Pp., 56. Paper, 30c.
(1s. 6d.).
THE PRINCIPLES OF BACTERIOLOGY. By Dr. Ferdinand
Hueppe. Woodcuts, 28. Pp., 467. $1.75 (7s. 6d.).
THE OPEN COURT PUB. CO., CHICAGO.
ON
GERMINAL SELECTION
AS A
ON ORTHOGENESIS. By Th. Eimer. Pp., 56. Paper, 30c.
(1s. 6d.).
THE PRINCIPLES OF BACTERIOLOGY. By Dr. Ferdinand
Hueppe. Woodcuts, 28. Pp., 467. $1.75 (7s. 6d.).
THE OPEN COURT PUB. CO., CHICAGO.
AS A