genes for fasciation in such a way that they increase row 
numbers without causing a flattening of the rachis. 
6. One of the few archaeological cobs known which 
duplicates the extreme form of modern tunicate maize, 
was found in these collections. 
LITERATURE CITED 
Anderson, Edgar and R. O. Erickson, 1941. Antithetical dominance 
in North American maize. Proc. Nat. Acad. Sci. 27: 436-440. 
Collins, G. N., 1921. Teosinte in Mexico. Jour. Hered. 12: 338-350. 
Cosgrove, C. B., 1947. Caves of the upper Gila and Hueco areas in 
New Mexico and Texas. Papers of the Peabody Museum, Harvard 
Univ. 24: 1-181, 
Cutler, H. C., 1944. Medicine men and the preservation of a relict 
gene in maize. Jour. Hered. 35: 291-294. 
——, 1952. A preliminary survey of plant remains of Tularosa Cave. 
Fieldiana: Anthropology (Chicago Nat. Hist. Mus.) 40: 461-479. 
Harshberger, J. W., 1896. Fertile crosses of teosinte and maize. 
Garden and Forest 9: 522-528. 
Kempton, J. H. and W. Popenoe, 1937. Teosinte in Guatemala. 
Carnegie Inst. Wash. Publ. 483: 199-218. 
Lumbholtz, C., 1902. Unknown Mexico I. Charles Scribner’s Sons, 
New York. 
Mangelsdorf, P. C., 1952. Hybridization in the evolution of maize. 
in Heterosis, Iowa State College Press. 
——, 1954. New evidence on the origin and ancestry of maize. Amer. 
Antiquity 19: 409-410. 
and R. G. Reeves, 1939. The origin of Indian corn and its rela- 
tives. Texas Agric. Exper. Sta. Bull. 574. 
and C. E. Smith, Jr., 1949. New archaeological evidence on 
evolution in maize. Bot. Mus. Leaflets, Harvard Univ. 13: 213-247. 
and R. H. Lister, 1956. Bot. Mus. Leaflets, Harvard Univ. (in 
press). 
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