THE FOLSOM PROBLEM ROBERTS 545 



fornia remains may represent a somewhat later phase and for that 

 reason show some differences. 



In closing, attention should be called to the fact that there are other 

 traces of early occupancy in portions of the plains area, particularly 

 in Minnesota and Texas. In some cases there are indications that 

 the remains may antedate those of the Folsom complex, in others 

 that they are contemporaneous with it. Although detailed consider- 

 ation of these occurrences is not pertinent to the present discussion, 

 it is essential to mention them because they have significance in 

 connection with the study of early man in America, and the matter 

 of their relationship to or bearing on the Folsom problem is a phase 

 of the subject still to be studied. 



LITERATURE CITED 

 Antevs, Eenst 



1935 a. The occurrences of flints and extinct animals in pluvial deposits near 

 Clovis, N. Mex. Pt. 2, Age of the Clovis lake clays. Proc. Acad. 

 Nat. Sci. Philadelphia, vol. 87, pp. 304-312. 

 b. The spread of aboriginal man to North America. Geogr. Rev., vol. 

 25, No. 2, pp. 302-309, April. 

 Brown, Barnum 



1929. Folsom culture and its age (with discussion by Kirk Bryan). Bull. 

 Geol. Soc. Amer., vol. 40, pp. 128-129. 

 Bryan, Frank 



1938. A review of the geology of the Clovis finds reported by Howard and 

 Cotter. Amer. Antiquity, vol. 4, No. 2, pp. 113-136, October. 

 Bryan, Kirk 



1937. Geology of the Folsom deposits in New Mexico and Colorado. In 

 Early Man, as depicted by leading authorities at the International 

 Symposium, Academy of Natural Sciences, Philadelphia, March 

 1937, pp. 139-152. J. B. Lippincott Co., London. 

 Coffin, Roy G. 



1937. Northern Colorado's first settlers. Publ. by Colorado State Coll., 

 Fort Collins. 

 Cook, H. J. 



1927. New geological and paleontological evidence bearing on the antiquity 

 of mankind. Nat. Hist., Journ. Amer. Mus. Nat. Hist., vol. 27, No. 

 3, pp. 240-247, May-June. 

 Cotter, John L. 



1937. The occurrence of flints and extinct animals in pluvial deposits near 



Clovis, N. Mex. Pt. 4, Report on excavation at the gravel pit, 1936. 

 Proc. Acad. Nat. Sci. Philadelphia, vol. 89, pp. 1-16. 



1938. The occurrence of flints and extinct animals in pluvial deposits near 



Clovis, N. Mex. Pt. 6, Report on field season of 1937. Proc. 



Acad. Nat. Sci. Philadelphia, vol. 90, pp. 113-117. 

 Figgins, J. D. 



1927. The antiquity of man in America. Nat. Hist., Journ. Amer. Mus. 



Nat. Hist., vol. 27, No. 3, pp. 229-239, May-June. 

 1933. A further contribution to the antiquity of man in America. Proc. 



Colorado Mus. Nat. Hist., vol. 12, No. 2. 

 1935. New World man. Proc. Colorado Mus. Nat. Hist., vol. 14, No. 1. 



