56 Bulletin 1, Biological Society of Washington, 1918. 



Mason, Otis T. 

 The archaeology of the Potomac Tide-water region. 

 Proc. U. S. Nat. Mus. 12, pp. 367-370, Pis. 15-17, 1 fig., 1890. 



Proudfit, S. V. 



Note on the turtle-back celt. 



Am. Anthropologist 1, No. 4, Oct., 1888, pp. 337-339. 



Work of Indians not of paleolithic man. 



A collection of stone implements from the District of Columbia. 

 Proc. U. S. Nat. Mus. 13, pp. 187-194, Pis. 10-14, 1890. 



Tooker, W. W. 



On the meaning of the name Anacostia. 



Am. Anthropologist 7, No. 4, Oct., 1894, pp. 389-393. 



Derived from words meaning "at the trading town." 



Wilson, Thomas. 



The paleolithic period in the District of Columbia. 

 Proc. U. S. Nat. Mus. 12, pp. 371-376, Pis. 18-21, 1890. 



ACKNOWLEDGMENTS. 



The writer wishes to express his great appreciation of the 

 following courtesies: for reading the whole manuscript of 

 the preceding pages to Mr. William Palmer; for reading 

 various sections, to Dr. Walter Hough, Mr. E. A. Preble and 

 Mr. P. L. Ricker. 



