A Textbook Case (5 page)

•  Dirt, dust

--approximately two pounds in total

--indeterminate number of sources

--at least 12 main variations in composition

•  Food crumbs

--34 samples

•  Leaves

--249 collected

--from approximately 27 known trees/bushes

--73 unidentified

•  Grass, lawn

--376 samples

•  Grass, decorative

--64 samples

•  Excrement

--human/animal, to be determined

--DNA, to be determined

•  Light bulbs

--from parking garage

--removed, then shattered

•  Powdered substances

--214 samples

--non-narcotic

--possibly over-the-counter medicine, pulverized

--laundry detergent

--eight different brands