20 FRESH-WATER BIOLOGY 



SHELFORD, V. E. 1913. Animal Communities in Temperate America. 



Chicago. 362 pp., 306 figs. 

 STEUER, H. 1910. Planktonkunde. Leipzig and Berlin, 723 pp., 365 figs., i pi. 



1910 a. Leitfaden der Planktonkunde. 382 pp., 279 figs., i pi. 

 STOKES, A. C. 1896. Aquatic Microscopy for Beginners. 3d Ed. Trenton. 



326 pp. 

 WARD, H. B. 1896. A Biological Examination of Lake Michigan in the 



Traverse Bay Region. Bull. Mich. Fish Com., No. 6; 100 pp., 5 pi. 

 1898. The Freshwater Biological Stations of the World. Rept. Smith. 



Inst., 1898: 499-513, 3 pl- 

 WESENBERG-LUND, C. 1908. Plankton Investigations of the Danish Lakes. 



Copenhagen. Dan. Freshwater Biol. Lab. Op. 5; 389 pp., 46 pl. 



1910. Grundziige der Biologic und Geographic des Siisswasserplanktons, 

 nebst Bemerkungen iiber Hauptprobleme zu ktinftiger limnologischer 

 Forschung. Int. Rev. ges. Hydrobiol., 3: 1-44. (Biol. Suppl., Heft i.) 



WHIPPLE, G. C. 1914. Microscopy of Drinking Water. 3d Ed. New 

 York. 409 pp., 19 pl. 



ZACHARIAS, O. 1891. Die Tier- und Pflanzenwelt des Siisswassers. Leip- 

 zig. 2 vols. 

 1909. Das Plankton. Leipzig. 213 pp. 



ZSCHOKKE, F. 1900. Die Tierwelt der Hochgebirgsseen. Denkschr. Schweiz. 

 naturf. Ges., 37; 400 pp., 4 charts, 8 pl. 



1911. Die Tiefseefauna der Seen Mitteleuropas. Eine geographisch- 

 faunistische Studie. Leipzig. 246 pp., 2 pl. 



Contributions to Canadian Biology. Fasc. II. Freshwater Fish and Lake 

 Biology. (Various authors.) Sessional Paper No. 396. 1915. Ottawa. 



222 pp., 21 pl. 



JOURNALS 



American Naturalist. Especially Synopses of North American Invertebrates 

 (older volumes), edited by W. M. Woodworth. 



Annales de biologic lacustre. E. Rousseau. Brussels since 1906. 



Archiv fur Hydrobiologie und Planktonkunde. Stuttgart since 1905. (Con- 

 tinuation of Forschungsberichte aus der Biologischen Station zu Plon; 10 

 parts, 1893-1903.) 



Internationale Revue der gesammten Hydrobiologie und Hydrographie. 

 R. Woltereck. Leipzig since 1908. 



Transactions of the American Microscopical Society. T. W. Galloway, Ripon, 

 Wis. Since 1880. 



