4 1 8 Bibliography 



Sellards, E. H. 1914. Some Florida lakes and lake basins. 6th annual Rept. 



Fla. vState Geo!. Survey, pp. 1 15-160. 

 Shantz, H. L. 1907. A biological study of the lakes of the Pike's Peak 



Region. Trans. Amer. Micr. Soc. pp. 75-98. pis. 2. 

 Sharp, David. 1880-1882. Aquatic carnivorous coleoptera or Dytiscidae. 



Trans. Royal Soc. Sci. Dublin. Vol. II. Series II. 

 Sherff, E. E. 1912. The vegetation of Skokie Marsh. Bot. Gaz., 54: 415- 



435- 

 Shelford, V. E. 1913. Animal communities in Temperate America. Chicago. 



pp. 362. 

 Smith, J. B. 1904. Mosquitoes and their habits, life history, etc. Rep. N.J. 



Exp. Sta. 

 Smith, Lucy. 1913. The biology of Perla immarginata. Ann. Ent. Soc. 



Amer. 6 : 203-2 11. i pi. 

 Snow, Julia W. 1902. The Plankton alga; of Lake Eric. Bull. U. S. Fish. 



Comm. 22: 371. 

 Steuer, A. 1910. Planktonkunde. pp.723. Leipzig. 

 Stokes, A. C. 1888. A preliminary contribution toward a history of the 



fresh-water Infusoria of the United States. Jour. Trenton. Nat. His. 



Soc. Vol. I. No. 3. 

 Stokes, A. C. 1896. Aquatic microscopy for beginners, pp.326. 3d edit. 



Trenton. 

 Strodtman, 1898. Ueber die vermeintliche Schadlichkeit der wasserbluthe 



Forschungsber. Biol. Sta. Plon. 6: 206-212. 

 Surber, T. 1912. Identification of the glochidia of freshwater mussels. 



U. vS. Bureau Fish. Document No. 771. pp. 10. 3 pis. Also 1915 Docu- 

 ment No. 813. pp. 9. I pi. 

 Swammerdam, Johamies. 1685. Historia insect orum generalis. pp. 212 



pis. 13. 

 Tilden, Josephine. 1910. Minnesota alga^. Report of Minn. Surv. Bot. 



.Series VIII. Vol. I. pp. 328. pis. 20. 

 Transeau, E. N. 1906. The bogs and bog flora of the Huron Ri\er \'allev. 



Bot. Gaz., 40: 351-428. 

 Transeau, E. N. 1908. The relation of plant societies to evaporation. Bot. 



Gaz., 45: 317-3'- 

 Ulmer, Georg. 191 1. Unsere Wasserinsekten. pp. 165. Leipzig. 

 Verwom, Max. 1899. General physiology. London. (Tr. bv F. S. Lee). 

 Vertrees, H. H. 1914. Pearls and pearhng. New York. 

 Vorhies, C.T. 1909. Studies on the Trichoptera of Wisconsin. Trans. Wise. 



Acad. Sci. 16: 647-738. 10 pis. 

 Walton, L. B. 1915. Euglenoidina, Ohio State Umv. Bull. Vol. XIX. 



No. 5. 

 Ward, H. B. 1896. A biological examination of Lake Michigan in the 



Traverse Bay region. Bull. Mich. Fish. Com. No. 6. pp. 100. pis. 5. 

 Ward and Whipple, editors. (In press) American fresh-water biology. 



Chapters by many specialists. (B) 

 Warming, E. 1909. Ecology of plants. An introduction to the stud\- of 



plant communities. Oxford. (Transl. bv Percy Groom). 

 Weckel, Ada L. 1907. The fresh-water Amphipoda of North America. 



Proc. U. S. Nat. Mus., 32: 25-58. 

 Weckel, Ada L. 1914. Free-swimming fresh-water Entomostraca of North 



America. Trans. Amer. Mic. Soc. 33: 165-203. (B) 

 Weismann, August. 1866. IDie Metamorphose der Coretlira plumicoruis. 



Zeitschrift fiir wissensch. Zoologie, 16: 45-127, 2 pis. 



