14, 
——, 1957. Half-tunicate from Peru, Ecuador and Paraguay. 
Maize Gen. Codp. News Letter 31: 64, 
. ———, 1958. Reconstructing the ancestor of corn. Proc. Amer. 
Philos. Soc. 102: 454-463. 
——and Helen P., 1957. Genotypes involving the Tu-tu locus 
compared in isogenic stocks. Maize Gen. Codp. News Letter 31: 
65-66, 
17. —— and R. G. Reeves, 1939. The origin of Indian corn and its 
relatives. Texas Agric. Exp. Sta. Bull. 574. 
18. —— and R.G. Reeves, 1945. The origin of maize: present status 
of the problem. Amer. Anthropologist 47: 235-248. 
19. —— and C. E. Smith, Jr., 1949. New archaeological evidence 
on evolution in maize. Bot. Mus. Leafl. Harvard Univ. 13: 213- 
247, 
20. Randolph, L. F., 1952. New evidence on the origin of maize. 
Amer, Nat. 86: 193-202. 
21. Reeves, R.G., 1950. The use of teosinte in the improvement of 
corn inbreds. Agron, Jour, 42: 248-251. 
22. Roberts, L. M., U.J. Grant, R. Ramirez E., W. H. Hatheway 
and D.L. Smith, in collaboration with P. C. Mangelsdorf, 1957. 
Races of maize of Colombia. Nat. Acad. Sci.—Nat. Res. Council 
Publ. No. 510. 
23. Saint-Hilaire, A. de, 1829. Lettre sur une variété remarquable 
de mais du Brésil. Ann. Sci. Nat. 16: 143-145, 
24, Singleton, W. R., 1951. Inheritance of corn grass a macromuta- 
tion in maize, and its possible significance as an ancestral type. 
Amer. Nat. 85: 81-96, 
25. Sprague, G. F., 1955. Corn and corn improvement. New York, 
Academic Press. 
26. Vachhani, M. V., 1950. A study of the relationship of chromo- 
some knobs with certain agronomic and morphological characters 
in corn inbreds. Agron. Jour. 42: 196-201. 
27. Weatherwax, P., 1923. The story of the maize plant. Univ. 
Chicago Press. 
28, ——, 1929. The morphological nature of teopod corn. Jour. 
Hered. 20: 325-330. 
