PLATE 28 



Wood Fibres 



1. White sandalwood {Santalum album, L.). 



2. Quassia wood {PicrcBna excelsa, [Swartz] Lindl.). 



3. Logwood with crystals {Hamatoxylon campechianum, L.). 



4. Black haw root (Viburnum prunifolium, L.). 



