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REVIEWS AND BOOK NOTICES. 
The Life and Habits of the Badger, by J. F. Blakeborough and Sir A. E. 
Pease, Bart. London : ' The Foxhound ’ Office, 161 Piccadilly. Price 
5s. net., 1 12 pp., 4to. This is a chatty description of the badger from 
many points of view, and is illustrated by sketches and photographs, 
and also by photographs of the authors, which, however, must not be 
mistaken for wild animals. The chapters include : ' The Habits of the 
Badger,’ ' A Badger Dig,’ ‘ Badgers and the Mange,’ ‘ The Badger in 
Folklore and Earlv Literature,’ ‘ The Badger and Sport,’ ‘ Brock’s Own 
Story,’ ‘ Yaria.’ They are written in a pleasant style, and will interest 
both sportsman and naturalist. We are permitted to reproduce one of 
the illustrations. 
Notes on the Blue-Green Algae, by Harold Wager, F.R.S. Pp. 48. 
A. Brown & Sons, Ltd., Hull, 2s. 6d. Our readers have long been 
familiar with the important researches of Mr. Wager on several lowly 
groups of organisms — fungi, algae, flagellatae — and the value of his 
contributions to science in these branches is universally recognized. 
The present well-printed volume, the substance of which appeared in 
the pages of this journal for 1913, is related to his prolonged studies 
of the difficult and complex structures of the cell-contents of the blue- 
green Algae. In the course of these researches the author has experienced 
the difficulty of deciding on the presence or absence of a sheath. In 
many species of Phormidium the sheath is so thin and transparent that 
unless staining reagents are used it is extremely difficult to make out 
this determining character. He has, therefore, drawn up a series of 
characters which he has found most useful in the preliminary diagnosis 
of fifty species of Oscillatoria and thirty-seven species of Phormidium . 
The work, however, is much more than a key. The interesting intro- 
ductory chapters render it very useful for students of these plants, and 
deal with the leading facts of the structure and functions of the cells, 
reproduction, and classification. Then follow keys to (1) the orders 
and families of the group, (2) the genera of Oscillatoriaceae, and (3) the 
species of the genera Oscillatoria and Phormidium , concluding with a 
useful glossary of technical terms. 
Naturalist, 
