158 A CATALOG OF ILLINOIS ALGAE 



* . 1883B. The food of the smaller freshwater fishes. Bull. 111. State 



Lab. Nat. Hist. 1: 65-94. 



. 1888A. Studies of the food of freshwater fishes. Ihid. 2: 433-473. 



. 1888B. On the food relations of freshwater fishes: a summary 



and discussion. Ibid. 2: 475-538. 

 , and Richardson, R. E. 1913. Studies on the biology of the upper 



Illinois River. Ibid. 9: 481-574. 



and . 1919. Some recent changes in Illinois River biology 



Ibid. 13: 139-156. 

 *GaltsofT, P. S. 1924. Limnological observations in the upper Mississippi, 



1921. U. S. Bur. Fish. Bull. 39: 347-438. 

 *Garman, H. 1890. A preliminary report on the animals of the Mississippi 



Bottoms near Quincy, Illinois, in August, 1886, Part I. Bull. 111. State 



Lab. Nat. Hist. 3: 123-184. (1896) 

 *Gates, F. C. 1912. The vegetation of the beach area in northeastern Illi- 

 nois and southeastern Wisconsin. Ibid. 9: 255-372. 

 Geitler, L. 1932. Cyanophyceae. In Rabenhorst's Kryptogamen-Flora 



von Deutschland, Osterreich und der Schweiz. Band 14: 1-1196. figs. 



1-780. 

 , and Pascher, A. 1925. Cyanophyceae, Cyanochloridineae, Chlo- 



robacteriaceae. In A. Pascher, Siisswasserflora Deutschlands, Osterreich 



und der Schweiz. Heft 12: 1-481. figs. 1-574. 

 *Hazen, T. E. 1899. The life history of Sphaerella lacustris. Mem. Torn 



Bot. Club 6: 211-246. pis. 86, 87. 

 . 1902. The Ulotrichaceae and Chaetophoraceae of the United 



States. Ibid. 11: 135-250. pis. 20-42. 

 ♦Hedgecock, G. G., and Hunter, A. 1899. Notes on Thorea. Bot. Gaz. 28: 



425-429. 

 Heering, W. 1914. Ulotrichales, Microsporales, Oedogoniales. In A. 



Pascher, Die Siisswasserflora Deutschlands, Osterreich und der Schweiz. 



Heft 6. Chlorophyceae 3. pp. 1-250. figs. 1-385. 

 . 1921. Siphonocladiales, Siphonales. Ibid. Heft 7. Chlorophyceae 



4. pp. 1-103. figs. 1-95. 

 *Hempel, A. 1896. New species of Rotifera and Protozoa. Bull. 111. State 



Lab. Nat. Hist. 4: 310-318. (1898). 

 * . 1898. A list of the Protozoa and Rotifera found in the Illinois 



River and adjacent lakes at Havana, Illinois. Ibid. 5 : 301-388. (1902). 

 Hirn, K. E. 1900. Monographic und Iconographie der Oedogoniaceen. 



Acta Soc. Fennicae 27: 1-394. pis. 1-64, figs. 1-396. 

 Hoffman, Wm. E., and Tilden, J. E. 1930. Basicladia, a new genus of 



Cladophoraceae. Bot. Gaz. 89: 374-383. figs. 1-22. 

 *Houdek, P. K. 1923. An ecological survey and flora of Lake Knox. 



Trans. 111. State Acad. Sci. 16: 163-170. 

 Hustedt, Fr. 1930. Bacillariophyta (Diatomeae). In A. Pascher, Die 



Siisswasserflora Mitteleuropas. Heft 10: 1-466. figs. 1-875. 

 . 1930. Die Kieselalgen. In Rabenhorst's Kryptogamen-Flora von 



Deutschland, Osterreich und der Schweiz. Band 7, Teil 1. pp. 1-920. 



figs. 1-542. 

 . 1931-1937. Die Kieselalgen. Ibid. Band 7, Teil 2, Leiferung 1-5. 



pp. 1-736. figs. 543-1105. 



