996 
CERTAIN ABORIGINAL REMAINS, BLACK WARRIOR RIVER. 235 
— 
FIG. 171.—Stone vessel. Decoration on head 
and neck of duck. (About half size.) 
Fic. 170.—Stone vessel. Duck’s head, back view. (About full size.) 
same kind of stone. The results of these analyses, and two slides for the microscope, 
one made from each of the same two specimens, were submitted to Prof. George P. 
Merrill, Head Curator of Geology, United States National Museum, who kindly had 
consented to investigate the matter. Professor Merrill writes: 
“Т find on examination that the rock is so highly altered that its original 
mineral composition cannot be determined with any degree of accuracy. 
“ From examination of the structure, so far as it has been preserved during the 
