350 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 7 



Reviews 



Traite D'Entomobgis Forestiere, by A. Barbey. Berger-Lev- 

 rault, Paris, France, 1913. 



This volume, intended for foresters and woodland owners, contains brief chapters 

 on insect anatomy and insect classification, then discusses the principal insect pests 

 of each kind of tree used in forest planting, beginning with the conifers. Under each 

 host tree the insects are treated as follows: attacking the roots; bark of the trunk 

 and branches; interior of the wood; branches; buds, and leaves. 



The book contains 624 pages, 367 text figures, 8 colored plates, and a bibliogi'aphy 

 of 94 references to European literature. Many of the text figures are from excellent 

 photographs and the plates are from drawings. 



Though this volume is not indispensable to the forest entomologist in Ameiica, it 

 is useful as a reference work, and therefore finds a place in department libraries. 

 Those engaged in the inspection of imported nursery stock, and those studying Euro- 

 pean pests liable to be brought into this country, will find this book useful, and per- 

 haps therein lies its greatest value to American entomologists. 



W. E. B. 



Die Forstinsekten Mitteleuropas. Ein Lehr- und Haiidbuch by 

 K. EscHERiCH. A new edition of Judeich-Nitsche, text-book of cen- 

 tral European forest entomology. Revised. Vol. I. General In- 

 troduction. to the structure and life habits of insects, as well as the 

 general fundamental principles of practical forest entomology. 6°, 

 433 pp., 248 text figures. Berlin, 1914. 



Although this volume appeared only this year it has quite an interesting history 

 In 1841 Ratzeburg, the father of forest entomology in Germany, published especially 

 for private libraries and foresters a small volume entitled "Die Waldverderber und 

 ihre Feinde." So great was the demand for it, that in 1869 he issued a sixth etlition. 

 Each of the editions was revised and enriched with fresh observations. A seventh 

 revised edition was issued by Judeich in 1876. In 1885, Judeich & Nitsche published 

 the first part of a completely revised and enlarged edition under the new title as above, 

 though still designated "the eighth edition of Ratzebm-g's" original work. It will 

 be noted that in the present volume Ratzeburg's name is absent from the title page. 



Says the author in the preface: "About thhty years have now elapsed since the 

 first part of 'Judeich-Nitsche' appeared — thirty years full of activity and endeavor 

 in our science. Everjnvhere, primarily in North America, as a result of the recog- 

 nition of the profound significance of insects on life under our cultivation, applied 

 entomology has been studied with a hitherto unknown zeal and scientific earnestness. 

 An enormous amount of new facts of general importance were thus brought to fight 

 and some of the earher views must either be more or less modified or entirely thrown 

 overboard, so that our science today presents an essentially different aspect and also 

 places higher requirements upon the knowledge and skill of its representatives than 

 the science of thirty years ago." 



Four volumes are contemplated, of which this is the first. This is more than twice 

 as large as the corresponding part of the old edition, made necessary by the compre- 

 hensive treatment of the anatomy, physiology and developmental history of the in- 

 sects and especially by the exhaustive presentation of the factors limiting increase 

 (Chapter \T) and the fundamental principles of effective rational control (VII). 

 The last two subjects could not, in the author's opinion, "be treated with sufficient 



