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Photographic gallery.  Thousands of particles under the microscope.

Ashed Douglas Fir Needles

Ashed Douglas Fir Needles Ashed Douglas Fir Needles Ashed Douglas Fir Needles Ashed Douglas Fir Needles Ashed Douglas Fir Needles

Ashed Douglas Fir Bark

Ashed Douglas Fir Bark Ashed Douglas Fir Bark Ashed Douglas Fir Bark Ashed Douglas Fir Bark Ashed Douglas Fir Bark

Charred Douglas Fir Cross-field Pitting

Charred Douglas Fir Charred Douglas Fir Charred Douglas Fir