References 371 



Strong, C. L. 1959. The amateur scientist. Scient. Amer. 200(2) : 143-152. 



Sweadner, W. R. 1937. Hybridization and the phylogeny of the genus 

 Plafijsamia. Carnegie Mus. Ann. 25:163-242. 



Szent-Gyorgyi, A. 1956. Bioenergetics. Science 124:873-875. 



Taylor, J. H., P. S. Woods, and W. L. Hughes. 1957. The organization 

 and dupHcation of chromosomes as revealed by autoradiographic 

 studies using tritium-labeled thymidine. Nat. Acad. Sci. (U.S.A.) 

 Proc. 43:122-128. 



Teichert, C. 1956. How many fossil species? J. Paleo. 30:967-969. 



. 1958. Cold- and deep-water coral banks. Amer. Assoc. Petrol. 



Geol. Bull. 42:1064-1082. 



Theorell, H. 1956. Nature and mode of action of oxidation enzymes. 

 Science 124:467-472. 



Thiel, R. 1957. And there was light. Alfred A. Knopf, Inc., New York. 



Thomas, C. A., Jr. 1956. New scheme for performance of osmotic work 

 by membranes. Science 123:60-61. 



Thornton, W. A. 1955. Interspecific hybridization in Biifo ivoodhousei 

 and Btifo voUiceps. Evolution 9:455-468. 



Tippo, O. 1938. Comparative anatomy of the Moraceae and their pre- 

 sumed allies. Bot. Gaz. 100:1-99. 



Tordoff, H. B. 1953. Groove-billed ani in Great Plains in 1952. Wilson 

 Bull. 65:202-203. 



Trager, W. 1953. Nutrition, in Insect Physiology, by K. Boeder. John 

 Wiley & Sons, Inc., New York. 



Tucker, J. M., and J. D. Sauer. 1958. Aberrant Amaranfhus populations 

 of the Sacramento-San Joaquin delta, California. Madrono 14:252- 

 261. 



Tuttle, O. F. 1955. The origin of granite. Scient. Amer. 192(4) :77-82. 



Udine, E. J. 1941. The black grain sawfly and the European wheat stem 

 sawfly in the United States. U. S. D. A. Circ. 607:1-9. 



Udvardy, M. D. F. 1951. The role of interspecific competition in bird 

 ecology. Oikos 3:98-123. 



Umbgrove, J. H. F. 1947. The pulse of the earth. 2nd ed. Martinius 

 NijhoflF, The Hague. 



Upjohn Company, The. 1958. The cell. Published by the Upjohn Co., 

 Kalamazoo, Mich, 



