7 oo SCIENCE PROGRESS 



evolution and adaptation. We have detected very few errors of any sort : on 

 p. 88 there is a wrong reference where "fig. 12" should be "fig. 14" ; on p. 250, 

 11. 2-7 is a passage that is not very clear, and seems to have got out of place ; 

 while it is not strictly correct to speak, p. 257, of the "sting" inflicted by Owl- 

 midges. 



The book is one to be enjoyed alike by the general educated public and by 

 trained zoologists. It is written in a delightful style and contains many picturesque 

 and even eloquent passages which will bear reading many times over. It is 

 printed in excellent type and has on the cover a most graceful, though simple, 

 design, that is perhaps intended as a symbol of the bird's-eye view of creation 



displayed within. 



O. H. Latter. 



Internationale Revue der gesamten Hydrobiologie und Hydrographie. 



Band i. Heft 1-2, May 1908. (Klinkhardt, Leipzig. 12 Mark.) 

 We welcome most cordially the appearance of a new Journal devoted to hydro- 

 biological and hydrographical studies. During the last ten years the synthesis 

 between oceanographical and biological research has been effected, and both kinds 

 of investigation are now carried on concurrently, with results of very great 

 theoretical interest as well as practical importance. But, hitherto, papers dealing 

 with such work have been published in all kinds of periodicals — Blue-books, 

 geographical journals, fisheries reports, etc., and this scattered condition of the 

 literature has been a decided drawback, for it has become very difficult for 

 the student of these matters to keep in touch with recent literature. The new 

 Revue deals with Oceanographical Investigations, Limnology, Planktology, and 

 the biology of marine and fresh-water basins so far as this is to be associated with 

 the study of the chemical and physical conditions obtaining in those media. It 

 will therefore supply a want which must have been experienced by those engaged 

 in these investigations. 



The combined Heft now before us contains a " Foreword " by Prof. Weis- 

 mann, and, most appropriately, an introductory article by Sir John Murray 

 dealing with those chemical and physical conditions in the hydrosphere which are 

 likely to affect the distribution and abundance of organisms. Richard Hertwig 

 writes on the opportunities for investigations of a fundamental nature which would 

 be afforded by the establishment of fresh-water biological stations. Raffaele Issel 

 contributes a short article dealing with thermal biology, and referring specially to 

 the fauna and flora of certain hot springs in Piedmont. A series of contributions 

 to the biology of the plankton of the sea begins with a long article by Alexander 

 Nathansohn on the general conditions of productivity in sea areas. Alfred Fischel 

 discusses methods of vital staining, with special reference to fresh-water Cladocera. 

 C. Klausener and G. Gotzinger give accounts of the physical characteristics and 

 faunas of certain lakes in Switzerland and Austria. 



In addition to these original contributions the Heft contains a number of 

 general accounts of the results of investigations which have been published in 

 extenso elsewhere. The physical and biological investigation of fresh-water lake 

 basins receives considerable attention : thus there are two summaries of the work 

 of the Scottish Lake Survey, and summaries of work carried out in lakes in 

 Wisconsin, Ceylon, the higher Alps, and in Lake Victoria Nyanza. There is also 

 a general account of the progress of marine exploration in Austrian seas, and of 

 recent investigations with reference to the migrations of food-fishes in the North 

 Sea and the Baltic. 



