A 1.1. Follicle marks, hair holes
Pattern of follicle marks.
If during the preparation of the parchment, some of the grain layer was preserved, it is possible to determine the animal species based on the pattern of the follicle marks. The degradation or gelatinisation of the parchment may often be related to the follicles marks in the grain layer. As the result of the parchment’s degradation in the region of the holes is significantly more yellow and thereafter, the pattern of the follicle marks is clearly discernible on the surface of the skin.

Karvanääpsuaugud.
Karvanääpsuaukude muster degradeerunud pärgamendis.
Dokumenteeritud degradeerunud pärgamendis on karvanääpsuaukude muster nähtav nii verso kui recto poolel. br>
Pinhole pattern in degraded parchment.
In the documented degraded parchment, the pinhole pattern is visible on both the verso and recto sides.

Karvanääpsuaugud.
Karvanääpsuaukude muster muutub hästi nähtavaks degradeerunud pärgamendis. br>
The pattern of pinholes becomes clearly visible in the degraded parchment.

Ürik TLA.230.1-i. 617 1436 a.
Karvanääpsuaugud.
Kui pärgamendi valmistamise viis on olnud selline, et osa pindmisest, karvanääpsuaukude ala paksusest (grain layer), on jäetud verso poolele alles, siis selles alas degradeerub pärgament kiiremini ja karvanääpsuaukude muster muutub degradeerunud pärgamendis hästi nähtavaks.
br>
If the parchment was made in such a way that part of the surface, the thickness of the hair follicle area (grain layer), was left on the verso side, then in this area the parchment degrades faster and the pattern of the hair follicle holes becomes clearly visible in the degraded parchment.

Ürik TLA.230.1-i.644,
1441. a.
Karvanääpsuaugud.
Karvanääpsuaukude muster pärgamendi verso poolel. br>
Pinhole pattern on verso side of parchment.