298 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1953 



Todd, T, Wingate, and Van Gorder, Leona, 



1921. The quantitative determination of black pigmentation in the sliiu of 

 the American Negro. Amer. Journ. Phys. Anthrop., vol. 4, No. 3, 

 pp. 239-260. 

 Ulmer, Fred A., Jk. 



1941. Melanism in the Felidae, with special reference to the genus Lynx. 

 Journ. Mammal., vol. 22, No. 3, pp. 285-288. 

 Van Dilla, M., Day, R., and Siple, F. A. 



1949. Special problems of bauds. In Newburgh, 1949, pp. 374-386. 

 VVeidek REICH, Franz. 



1943. The skull of Sinathropiis pekinensis. (No. 127 of Palaeontologia Sinica, 

 National Geological Survey of China.) 

 Williams, George I). 



1931. Maya-Spanish crosses in Yucatan. Pap. Peabody Mus. Amer. 

 Archaeol. and Ethuol., Harvard Univ., vol. 13, No. 1. 

 Wilson, Elsie A. 



1945. Basal metabolism and race. Amer. Journ. Phys. Anthrop., n. s., vol. 

 3, No. 1, pp. 1-19. 

 WtJLSIN, F. R. 



1948. Responses of man to a hot environment. Office of the Quartermaster 



General, Military Planning Div., Research and Development 

 Branch, Environmental Protection Sect. Rep. No. 139. Washington, 

 D. C. 



1949. Adaptations to climate among non-European peoples. In Newburgh, 



1949, pp. 3-69. 



Reprints of the various articles in this Report may be obtained, as long as 

 the supply lasts, on request to the Editorial and Publications Division, 

 Smithsonian Institution, Washington 25, D. C. 



