Cotton: Burns, but does not melt. It has the odor of burning paper, leaves, or wood. The residue is a fine, feathery, gray ash.
Hemp: Same as cotton
Linen: Same as cotton
Silk: Burns, but does not melt. It shrinks from the flame. It has the odor of charred meat. The residue is a black, hollow irregular bead that can be crushed easily into a gritty black powder. It is self-extinguishing, i.e., it burns itself out.
Wool, and other Protein Fibers: Burns, but does not melt. It shrinks from the flame. It has a strong odor of burning hair. The residue is a black, hollow irregular bead that can be easily crushed into a gritty black powder. It is self-extinguishing, i.e., it burns itself out.
Acrylic: Has a fishy odor. The residue is a hard irregularly-shaped bead. It also gives off a black smoke when burned.