Certain Reactions of Albino Hair

Abstract

UNDER this heading in NATURE of March 24 (p. 96) Miss Igerna Sollas referred to some experiments of mine upon the hair of albino rats, in which she failed to obtain one of the reactions described in my note (Proc. Physiological Soc., March 27, 1909). It is, of course, not improbable that different albino rats may carry different chromogens, and that some of them may lack the one which, when oxidised with H₂O₂, gives a brownish colour. On the other hand, the failure may be due to the presence of some of the formalin, which may not have been completely washed away from the previous reaction.