When examining a sample of glass fragments recovered from a suspect in
a forensic case, the question arises whether the fragments may come f
rom several different sources. It is necessary to include this informa
tion in the statistical analysis. A divisive method for dealing with t
he grouping problem is proposed. It is compared with the agglomerative
methods currently in use via Monte Carlo simulation. (C) 1997 Elsevie
r Science Ireland Ltd.