A Hæmoglobin from Bile Pigment

UNDER this title, Lemberg, Legge and Lockwood have described in NATURE of July 23, p. 148, ``a new hybrid hæmoglobin'' formed by special treatment of hæmoglobin - ascorbic acid solutions. In the summary given, p. 166, one finds the following: ``The new compound, like hæmoglobin, combines reversibly with oxygen and carbon monoxide, but the non-protein part of its molecule is a bile pigment closely related to verdohæmatin.'' This might give the impression that the existence of bile pigment-globin compounds was not known before.