What do we "know" that forms the basis for the design inference? ~ atlaw
Well, in the example of Pic #3, we know that it is Silica. There is no speculation needed. Though, I must say from my expertise in dealing with Silica that you rarely find it in a pure form naturally.
Woody.
162 posted on 03/06/2003 6:05:22 PM PST by CCWoody