288 BUtlyETiN OF THE BUREAU OF FISHERIES. 



Raunkiaer, C. 



1903. Anatomical Potamogeton studies and Potamogeton fluitans. Botanisk Tiddskrift, vol. 25, 

 no. 3, p. 253-280, text fig. 9. 

 Reichenbach, Ludovicus. 



1845. Icones Florae Germanicae et HelveticEe, vol. 7, p. 40, pi. 71. 

 Reighard, J. E. 



1894. A biological examination of Lake St. Clair. Bulletin Michigan Fish Commission, no. 4, p. 

 60, text fig. I, pi. 2, I map. Lansing. 

 Sauvageau, M. C. 



1889. Contribution a I'^tude du syst^me m^canique dans la racine des plantcs aquatiques les Pota- 



mogeton. Journal de Botaniquc, 3" ann^e, no. 4, p. 61-82, fig. g. 



1890. Observations sur la structure des fc-uilles des plantcs aquatiques. Ibid., 4' annee, p. 41, 68, 



117, 129, 173, 181, 221, 237. 



iSgi. Sur les feuilles de quelques Monocotyledones aquatiques. Annales des Sciences Natu- 

 relles Botanique, 7" s^r., p. 103-296. 



1894. Notes Biologiques sur les Potamogeton. Journal de Botanique, 8" ann^e, p. i, 21, 45, 98, 

 112, 140, 166, fig. 31. 

 Shelpord, Victor E. 



1913. Conditions of existence of aquatic animals, p. 58-72. In his: Animal communities in tem- 

 perate America. Chicago, University of Chicago press, 1913. 

 Sherff, Earl E. 



1913. Vegetation of Skokie Marsh. Bulletin of the Illinois State Laboratory, vol. 9, art. 11, p. 

 575-614, pi. 86-97. 



SCHENCK, H. 



1886. Die Biologic der Wassergewachse, pi. 2. Bonn. Entry taken from a review in Botanisches 

 Centralblatt, no. 24, p. 355. 

 Thompson, H. D. 



1897. Report on Plants. In: The biological examination of Lake Michigan. Appendix i. Bulletin 



Michigan Fish Commission, no. 6, p. 72-75. 

 Thompson, R. B. 



1913. Description of edible plants. In: The increase of tlic food supply for ducks in northern 

 Ontario. Toronto, p. 8-17, text fig. 2, fig. i-jb. 

 Tilbury, Mary Ruth. 



1913. Notes on the feeding and rearing of the midge, Chironomus cayugse johannsen. Journal 

 New York Entomological Society, vol. 21, p. 305-308. 

 TiTCOMB, John W. 



1909. Aquatic plants in pond culture. Bureau of Fisheries, doc. no. 643, 31 p., 32 text fig., 2 pi. 

 USPENSKIJ, E. E. 



1913. Zur Phylogenie und Okologie der Gattung Potamogeton. Moscou. Entry taken from a note 

 in Flora, bd. 7, p. 187. 

 Warming, Eugene. 



1909. Oecology of plants. An introduction to the study of plant communities, p. 422. Oxford. 

 WiEgand, K. M. 



1898. Embryology of Potamogeton. Botanical Gazette, vol. 25, p. 116-117. 



1899. Development of microsporangiura and microspores in Potamogeton. Ibid., vol. 28, p. 



328-359. Pl- 24-25- 

 York, Harlan. 



1905. The hibemaculaof Ohio water plants. Ohio Naturalist, vol. 5, no. 4, p. 3, fig. 3. Columbus. 



