Chapter 34

34 - Book 9, Chapters 60-67: The nature of the murex and the purple; the different kinds of purples; how wools are dyed with the juices of the purple; when purple was first used at Rome; fabrics called conchyliated; the amethyst, the Tyrian, the hysgnian and the crimson tints; the pinna and the pinnotheres; the sensitiveness of water-animals; the torpedo, the pastinaca, the scolopendra, the glanis and the ram-fish

Natural History Volume 2