_Revue Scientifique._ Nous ne pouvons entrer dans le détail; mais il est évident que M. Seward, praticien distingué lui-même, est très au courant des travaux des autres, il les cite et utilise abondamment; et ceci est fait pour inspirer confiance. Au total, son œuvre est appuyée sur des bases solides, et elle restera sans doute longtemps le bréviaire, le manuel de ceux qui veulent, non pas seulement s’initier à la paléobotanique, mais retrouver les renseignements qui sont épars dans des centaines de monographies qu’on a souvent peine à se procurer. Le livre de M. Seward fait partie des _Cambridge Natural Science Manuals_, et il est digne de cette collection, qui est elle-même digne du foyer scientifique universellement réputé, où il a vu le jour. +Zoology. An Elementary Text-Book.+ By A. E. SHIPLEY, Sc.D., F.R.S., and E. W. MACBRIDE, M.A. (Cantab.), D.Sc. (London). _Second edition._ Demy 8vo. With 349 illustrations. 10_s._ 6_d. net_. _Pall Mall Gazette._ Precisely the sort of book which, if it came into a thoughtful boy’s hands, would turn him from a smatterer into a student.... One of the most instructive and attractive books that could be put into the hands of a young naturalist. +Trees+: A Handbook of Forest Botany for the Woodlands and the Laboratory. By H. MARSHALL WARD, Sc.D., F.R.S. Vol. I. Buds and Twigs. Vol. II. Leaves. Vol. III. Flowers and Inflorescences. Vol. IV. Fruits. Vol. V. Form and Habit, with an Appendix on Seedlings. Crown 8vo. With numerous illustrations. 4_s._ 6_d. net each_. Price for the set of five volumes, 20_s. net_. _Nature._ The clear and simple way in which the author treats the subject is sure to inspire many with interest and enthusiasm for the study of forest botany.... The work will be found indispensable to those students who wish to make an expert study of forest botany. At the same time it is expressed in language so clear and devoid of technicalities that the amateur who wishes to know something about our trees and shrubs will find this one of the most useful guides to which he can turn.... The work is a many sided one, acting not only as a guide to the naturalist in the field, but also as a laboratory handbook, where the use of the lens and microscope may be employed to amplify the study of objects already observed in their natural habitats. Botanists generally, and especially forest botanists will welcome the appearance of this book as supplying a decided want, and filling a distinct gap in our literature of forest botany. +Grasses+: a Handbook for use in the Field and Laboratory. By H. MARSHALL WARD, Sc.D., F.R.S. Crown 8vo. With 81 figures. 6_s._ _Field._ The work is essentially suited to the requirements of those desirous of studying the grasses commonly grown in this country, and it can fairly be said that it furnishes an amount of information seldom obtained in more pretentious volumes. P. T. O.