514 References 



Krogh, A., 1931, Dissolved substances as food of aquatic organisms, Biol. Revs., 



6: 412-442. 

 Krogh, A., 1939, Osmotic Regulation in Aquatic Animals, Cambridge University 



Press. 

 Kuenen, Ph. H., 1950, Marine Geology, Wiley, Nevi' York. 

 Lack, D., 1947, Danvin's Finches, Macmillan, New York. 

 Lack, D., and E. Lack, 1951, Further changes in bird-life caused by afforestation, 



/. Animal Ecol, 20: 173-179. 

 Ladd, Harry S., 1951, Brackish-water and marine assemblages of the Texas coast 



with special reference to mollusks, Puhl. Inst. Marine Science, 2: 125-164. 

 Ladd, H. S., and J. I. Tracey, 1949, The problem of coral reefs, Sci. Monthly 



69: 297. 

 Lauzier, L., R. W. Trites, and H. B. Hachey, 1951, Some features of the surface 



layer of the Gulf of St. Lawrence, Rept. Joint Committee on Oceanography, 



Atlantic Oceanographic Group, St. Andrews, N. B. 

 Leake, D. V., 1939, Preliminary note on the production of motile cells in 



Basicladia, Proc. Oklahoma Acad. Sci., 19: 109-110. 

 van Leeuwen, W. M. D., 1936, Krakatau-1883-1933, A. Botany, E. J. Brill, 



Leiden. 

 Lehr, J. J., 1942, Importance of sodium for plant nutrition, Soil Sci., 53: 399. 

 Leopold, A., 1943, Deer irruptions, Wisconsin Conserv. Dept. Puhl. 321: 1-11. 

 Leopold, A., 1947, Game Management, Scribner, New York. 

 Leopold, A. C, 1951, Photoperiodism in plants, Quart. Rev. Biol, 26: 247. 

 Leopold, A. C, and C. M. Kirkpatrick, 1952, The role of darkness in sexual ac- 

 tivity of the quail. Science, 116: 280-281. 

 Lincoln, F. C, 1933, State distribution of returns from banded ducks, No. 5, 



Bird-Banding, IV-4: 177-189. 

 Lindeman, R. L., 1942, The trophic-dynamic aspect of ecology. Ecology, 23: 399- 



418. 

 Livingston, B. E., and F. Shreve, 1921, The distribution of vegetation in the 



United States as related to climatic conditions, Carnegie Inst. Wash. Puhl. 284. 

 Loeb, J., 1918, Forced movements, tropisms, and animal conduct, Lippincott, New 



York. 

 Lotka, A. J., 1934, Theorie analytique des associations biologiques, Actualites sci. 



et indus., 187: 1-45. 

 Lucas, C. E., 1949, External metabolites and ecological adaptation, Symposia Soc. 



Exptl. Biol, 3, Growth: 336-356. 

 Lundegardh, H., 1931, Environment and Plant Development (Translated by Eric 



Ashby), E. Arnold & Co., London, 302 pp. 

 Liischer, M., 1953, The termite and the cell, Sci. American, 188 (5): 74-81. 

 Lyman, C, 1942, Control of coat color in the varying hare, Lepus americanus 



Erxleben, Ph.D. thesis, Harvard University. 

 Lyman, C. P., and P. O. Chatfield, 1950, Hibernation, Sci. American, 183 (6): 



18-21. 

 Lyon, T. L., H. O. Bucknian, and N. C. Brady, 1952, The Nature and Properties of 



Soils, Macmillan Co., New York. 

 MacArthur, ]. W., and W. H. T. Baillie, 1929, Metabolic activity and duration of 



life, /. Exptl Zool, 53: 243-268. 

 MacGinitie, G. E., and N. MacGinitie, 1949, Natural history of marine animals, 



McGraw-Hill, New York. 



