Bibliography 181 



Putnam, F. W., Abstract of Paper published in Popular Science News 

 for January, 1896. American Antiquarian, Vol. XVIII, 1896, 

 P- 55- 

 Putnam, F. W. and Willoughby, C. C, Symbolism in Ancient Ameri- 

 can Art. American Association for the Advancement of Science, 

 Vol. XLIV, 1896, pp. 302-323. 



Shetrone, H. C, Culture Problem in Ohio Archaeology. American 

 Anthropologist (n.s.), Vol. XXII, 1920, p. 144. 



Squier and Davis, Ancient Monuments of the Mississippi Valley 

 (1848), pp. 24-29, 156, 255. 



Willoughby, Charles C, i. Primitive Metal Working. American 

 Anthropologist (n.s.), Vol. V, 1903, p. 55. 



2. The Art of the Great Earthwork Builders of Ohio. Holmes 

 Anniversary Volume (Washington, 1916), pp. 470, 473, 475, 476. 



3. Serpent Mound of Adams County, Ohio. American Anthropo- 

 logist (n.s.), Vol. XXI, 1919, p. 153. 



Wilson, Thomas, The Swastika. Report of the U. S. National Museum, 

 1894, pp. 888-894. 



Wissler, Clark, The American Indian (New York, 1917), p. 253; 

 2d ed. (1922), pp. 269-270. 



Wright, G. Frederick, Story of My Life (19 16), p. 410. 



