The Soluble Ferments and Fermentation. By J. Reynolds Green, Sc.D., F.R.S., Professor of Botany to the Pharmaceutical Society of Great Britain. Second edition. Demy 8vo. 12s.

Nature. It is not necessary to recommend the perusal of the book to all interested in the subject since it is indispensable to them, and we will merely conclude by congratulating the Cambridge University Press on having added to their admirable series of Natural Science Manuals an eminently successful work on so important and difficult a theme, and the author on having written a treatise cleverly conceived, industriously and ably worked out, and on the whole, well written.

Conditions of Life in the Sea. A short account of Quantitative Marine Biological Research. By James Johnstone, Fisheries Laboratory, University of Liverpool. Demy 8vo. With a chart and 31 illustrations. 9s. net.

The Natural History of some Common Animals. By Oswald H. Latter, M.A., Senior Science Master at Charterhouse. Crown 8vo. With 54 illustrations. 5s. net.

Nature. An excellent book, written by a man who is equally in his element whether he writes as an outdoor naturalist or as a laboratory student. This combination is by no means a common one, and it is just the combination that is wanted for a book of this kind.... Altogether the book is an admirable one.

Athenæum. A book that may be judiciously placed in the hands of any boy who evinces a reasonable interest in the animal life around him.

The Classification of Flowering Plants. By Alfred Barton Rendle, M.A. (Cantab.), D.Sc. (Lond.), F.L.S., Keeper of the Department of Botany, British Museum. Vol. I. Gymnosperms and Monocotyledons. Demy 8vo. With 187 illustrations. 10s. 6d. net.

Gardener’s Chronicle. Numerous illustrations and an excellent index add to the value of the work. We heartily congratulate the author on the partial accomplishment of a difficult and laborious task. The part before us does but whet our appetite for what is to follow.

Athenæum. The first instalment of a text book which will well represent the state of our knowledge in the early years of the century. In the present volume the Gymnosperms and the Monocotyledons alone are dealt with; but they are treated with such excellent co-ordination of detail and such clear-headed sense of proportion, that we eagerly await the publication of the next instalment.