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The day following the offence the offender’s clothing was taken from him for
forensic examination, including pollen
analysis. These clothes consisted of a blue denim jacket, a black polo shirt,
black nylon track pants, a dark blue baseball cap, separate black track shoes,
and brown socks. All these items were analyzed for their pollen content.
Pollen in clothing tends to reflect the history of each individual item, and as
such it is not expected that all these
items would produce the same pollen assemblage. Of course, in the unlikely event
that all separate items of clothing had always been worn at the same time, then
the pollen would reflect this. In
this case the only history that was important was the presence or absence of
Hypericum
pollen and its abundance.