Published online by Cambridge University Press: 11 June 2012
During a study of the micro-structure of keratin fibres (Stoves, 1944) it was found that certain members of the Mustelidæ, e.g. kolinsky (M. Sibirica), ermine (M. erminœ), and Jap mink (M. itatsi), possess primary hairs with well-developed cuticle, cortex, and medulla. In the case of rabbits and hares (Leporidæ), however, the corresponding fibres are composed almost entirely of medulla cells. The two types of fibres, therefore, provide suitable material for studying the chemical reactivity of the keratin constituting cuticle, cortex, and medulla of animal hair. Accordingly, the effect of various reagents upon transverse sections of fibres from the above-mentioned animals was examined, and a preliminary report of the results has already been made (Stoves, 1943 a). A more detailed account of the work now appears.