Smithsonian Report, 1948.—Brown PLATE 6 
1. An irregular mass from Whisky Basin, showing thick algal lime incrustations 
around tangled pieces of silicified wood, which was probably drift debris that 
sank to the bottom of the lake near shore. X 1}. 
2. Cross section of a pillar that toppled from its vertical position, bashing in the 
lower side, as shown by break at arrow. Portions of the broken algal cylinder 
: = , 
are now in the center surrounded by chalcedony. Opal, Wyo. ¥y, 
