252 BUI^LETIN OP THE BUREAU OP FISHERIES. 



LITERATURE CITED. 



BiKGE, Edward A. 



1915. The teat budgets of American and European Lakes. Transactions, Wisconsin Academy 



of Sciences, Arts, and Letters, Vol. XVIII, pp. 1-47. Madison. 



1916. The work of the wind in warming a lake. Ibid., pp. 341-391. 

 1921. Limnological apparatus. Ibid., Vol. XX (now in press). 



BiRGB, Edward A., and Chancby Jtjday. 



1914. A limnological study of the Finger Lakes of New York. Bulletin, U. S. Bureau of Fish- 

 eries, 1912, Vol.XXXII, pp. 525-609. Washington. 

 Hamburg, Axel. 



1911. Dichteunterschiede und Temperaturverteilung hauptsachlich der Binnenseen. Peter- 

 manns geographische Mitteilungen, Bd. 57, pp. 306-312. Gotha. 

 Henry, W. A. 



1898. Feeds and feeding. 657 pp. Published by the author, Madison, Wis. 

 Huitfeld-Kass, H. 



1905. Temperatunnessungen in dem See Mjosen und in drei anderen tiefen Norwegischen Seen. 

 Archiv for Mathematik og Naturvidenskab, Bd. XXVII, No. is, pp. 1-6. Kristiania. 

 Juday, Chancey. 



1916. Limnological apparatus. Transactions, Wisconsin Academy of Sciences, Arts, and Letters, 

 Vol. XVIII, p. 566-592. Madison. 

 Schmidt, Wilh. 



1908. tJber die Absorption der Sonnenstrahlung im Wasser. Sitzungsberichte der kaiserlichen 

 Akademie der Wissenschaften, Bd. CXVII, pp. 237-253. Wien. 



