Page 25 - Strands of Evidence Hair And Fiber

HUMAN
The medulla is absent, or less than
1/3 the diameter of the hair
2

ANIMALS
The medulla is evident and greater
than 1/3 the diameter of the hair

CAT
The medulla is segmented, and the
cuticle has overlapping scales
3

DOG
The medulla is solid, the cuticle
smooth, and cortical fusi are evident

COTTON
Fiber has a lateral twist, as in the
first image below
4

CARPET
Fiber is tri-lobal, as in the
bottom image

THE MYSTERY OF LYLE AND LOUISE 25