7i6 MARIUS R. CAMPBELL 



that this material must have come from a long distance under ground, 

 and the minute channels through which it was transported have 

 been closed by material falling in from above or carried in by water 

 in suspension. 



The constructional feature of the mound is considered to have 

 been proved in this particular case, but it still remains to account 

 for the agent that performed the work. It is believed, however, 

 that careful work in trenching some of the best preserved examples 

 of these mounds would furnish some evidence to determine this part 

 of the question, but such investigations have never been undertaken, 

 at least not on an extensive scale. 



LITERATURE AND REFERENCES TO MOUND TOPOGRAPHY 



Whitney, J. D. Geology of California, Vol. I, p. 367 (1865). 



Hopkins, F. V. "First Annual Report of the Louisiana State Geological Sur- 

 vey." Louisiana State University Report for 1869, pp. 80-2 (1870). 



LoCKETT, S. H. "Report of Topographical Survey of Part of Louisiana." 

 Ibid., pp. 66-7. 



Featherman, a. "Third Annual Report of the Botanical Survey of South- 

 west and Northwest Louisiana." Ibid., for 1871, p. 107 (1872). 



HiLGARD, E. W- Supplementary and Final Report of a Geological Reconnois- 

 sance of the State of Louisiana, made under the auspices of the New Orleans 

 Academy of Science and the Bureau of Immigration, May and June, 1869 

 (New Orleans, 1873), p. 11. 



Foster, J. W. Prehistoric Races of the United States, 2d ed (Chicago, 1873), 

 pp. 121-2. 



LeConte, Joseph. "On the Great Lava Flood of the Northwest and on the 

 Structure and Age of the Cascade Mountains." Califorina Academy of 

 Natural Science. Proceedings, Vol. V, pp. 214-20 (1875). 



Wallace, A. R. "Glacial Drift in California." Nature, Vol. XV (January 

 25, 1877), pp. 274-5. 



LeConte, Joseph. "Hog Wallows or Prairie Mounds." Ibid. (April 19, 



1877), PP- 530-1- 



Barnes, G. W. "The Hillocks or Mound-Formations of San Diego, Cali- 

 fornia," American Naturalist, Vol. XIII (September, 1879), PP- 565-71- 



Nadaillac, Marquis de. Prehistoric America. Translated by N. d'Anvers 

 (1895), p. 182. 



Clendenin, W. W. "The Florida Parishes of East Louisiana and the Bluff 

 Prairie and Hill Lands of Southwest Louisiana. Geological Survey of 

 Louisiana, Preliminary Part 3, pp. 179-83 (1896). 



