Authors:
W. R. Lang and W. K. Campbell

Date of Publication:
August 13, 1966

Publication:
Nature 211, 757 (1966)

Abstract:
The cortex of a crimped Merino wool fibre comprises two hemi-cylinders, which differ in both chemical and physical properties. The form of the crimp wave is related to alternations in the positions of the two cortical components within the fibre—the ortho- and the para-cortex^1–4. The ortho-cortex tends to lie on the convex aspect of the crimp wave and the para-cortex on the concave aspect.

Read the rest of the article: https://www.nature.com/articles/211757a0