“…The accumulation of bilirubin in the blood after birth suggests that the excretory capacity of the liver is inadequate. Such an inadequacy has been demonstrated only indirectly, either by the diminished ability of newborn and premature infants to excrete bromsulphalein dye (Mollison and Cutbush, 1949;Yudkin and Gellis, 1949; Obrinsky, Denley and Brauer, 1952;Perl, 1957) or by the fact that an inverse relationship exists between the amount of bile pigment in the meconium and the subsequent rise of the bilirubin in the serum (Ross, Waugh and Malloy, 1937;Fashena, 1948;Napp and Plotz, 1949;Vest, 1958). It therefore seemed promising to investigate the glucuronic acid conjugating ability of the liver in newborn and premature infants.…”