By Jeffrey Quiggle Uncertainty in the stock market has investors looking at historic Treasury data with more than a little curiosity. The term “dead cat bounce,” while understandably offensive to some, is a common expression on Wall Street for an investment that suddenly jumps in value after a consistent downward trend. Investors wonder if its upward movement is a small correction on the way further down or whether it might be the beginning of a return to strength. The worry is that while an investment is still dropping in value, a temporary rise in price resembles a crude nod to a reality of …