Casey Anthony's defense team called a forensic geologist and a forensic toxicologist from the FBI as the first witnesses on Day 25 of the central Florida woman's trial in her daughter's death.
Judge Belvin Perry says Wednesday will only be a half-day because he must attend a judge's meeting.
Maureen Bottrell testified she analyzed 22 pairs of shoes taken from the Anthony home. She says three pairs of shoes had significant enough amounts of soil to compare with soil samples taken from the site where the skeletal remains of 2-year-old Caylee were found.
Anthony is charged with first-degree murder in Caylee's death and has pleaded not guilty and faces the death penalty if convicted.
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