116 • MEDICAL JURISPRUDENCE 3. The Character of Hairs showing the., manner of extraction.—When examined under a microscope, hairs cut by a sharp weapon will not show the roots, and the'cut ends will exhibit a more or less regular section. Recently cut hairs show a sharply cut, edge with a projecting cuticle^axid-aJeswLloose fibres^"T^5Heir"a" week the end "becomes square, smooth, and rounded.........but blunt.' After" three to four months the end..............becomes elongated, .but jagt similar to the original uncut end, and the medulla......is........always.....absent from such ends. .The root should be examined to determine whether a hair has dropped out, or has been pulled forcibly. The root of a hair that has dropped out spontaneously is round and solid, but atrophic, while the root of a hair that has been extracted forcibly has a hollow, concave surface, which covers the papilla of the cerium.