106 Scientific Intelligen 



ce. 



have already been reviewed in this Journal (see xxxv, 335). In 

 the present part, which concludes the volume, the vegetation of 

 the region visited by the Expedition is discussed by the editor, 

 Dr. Mildbraed. The treatment is largely ecological and the 

 various formations represented in equatorial Africa are taken up 

 in considerable detail. Attention is called in conclusion to the 

 strong resemblance between the flora of the eastern part of Africa 

 and that of the western coast. 



Volume V, Zoology III, edited by Dr. H. Schubotz. Lief. 

 1, 2. Of the nine large volumes in which the results of this 

 important expedition are being published (see above), volume V 

 is devoted to zoology. Of this, Lief. 1, on the Orthoptera, is by 

 James A. G. Rein ; it occupies pp. 1-223 and discusses 226 species 

 of these insects, including 81 species and 10 genera new to 

 science. Lief. 2 is devoted to Fishes, and is by P. Pappenheim 

 und G. A. Boulenger. This includes pp. 225 to 260, with 10 

 plates and describes 21 new species of fishes. 



a. w. e. and w. r. c. 



5. The Elementary Principles of General Biology ; by James 

 Francis Abbott. Pp. xvi, 329, with 114 illustrations. New 

 York, 1914 (The Macmillan Co.). — The modern conception that 

 the essential principles governing the life and growth of organ- 

 isms are identical in both plants and animals is well illustrated by 

 this book. In the general treatment of the subject the author 

 therefore selects his examples impartially from both kingdoms, 

 choosing those which most clearly illustrate the principal phe- 

 nomena. None of the species either of animals or plants are 

 treated as structural entities, the activities rather than the mechan- 

 ism of organisms being considered of chief importance. 



The principal phenomena exhibited by organisms, such as meta- 

 bolism, growth, differentiation, development, variation, heredity, 

 organic response, and evolution are treated in such a clear and 

 logical manner as to furnish a comprehensive survey of the field 

 either for the student or the general reader. 



The use of a book of this character, when accompanied by suit- 

 able laboratory exercises, should mark a distinct advance over 

 the disjointed college courses in botany and zoology. w. r. c. 



6. Biology, General and Medical ; by Joseph McFarland. 

 Pp. 457, with 160 figures. Second edition, thoroughly revised. 

 Philadelphia and London, 1913 (W. B. Saunders Company). — Of 

 the numerous text-books which have appeared in this field dur- 

 ing the past decade this is one of the few that have enjoyed a 

 popularity so great as to require the printing of a new edition 

 within three years of the first publication. In addition to the 

 general discussion of the principal biological phenomena, the 

 author lays special emphasis on those phases of the subject which 

 concern the human welfare and which are particularly important 

 for a broad comprehension of the medical sciences. Such topics 

 include the blood relationship of animals, parasitism, infection 

 and immunity, mutilation and regeneration, grafting, senescence, 

 decadence, and death of organisms. w. r. c. 



