IN the sixteen years that have elapsed since the first publication of Bergey's “Manual” the work has undergone considerable change and amplification; many of the mistakes that detracted from the earlier editions have been rectified and the present edition, under its capable board of editors, shows a marked advance on its predecessors.
Bergey's Manual of Determinative Bacteriology
A Key for the Identification of Organisms of the Class Schizomycetes. By David H. Bergey, Robert S. Breed, E. G. D. Murray and A. Parker Hitchens. Fifth edition. Pp. xi + 1032. (London: Baillière, Tindall & Cox, 1939.) 45s.