1.   As a result, Sojourner failed in its first effort to analyze the chemistry of the rock, dubbed Yogi.

2.   Dr. Stanley H. Ambrose, an anthropologist at the University of Illinois at Urbana, analyzed the chemistry of ancient soil mixed with the fossils.

3.   Meawhile, instruments aboard the landing craft are analyzing the chemistry of Martian minerals.

4.   Meanwhile, the rover Sojourner has moved on to its next target, sidling up to a big rock nicknamed Yogi in preparation for analyzing its chemistry today.

5.   Then, later Friday, the rover may set off after its next quarry, probably a pale rock called Scooby Doo, and try to analyze its chemistry.

6.   He said scientists will continue to collect data from a NEAR instrument that can analyze the chemistry of the barren space rock.