CONCERNING THE NATURALLY OCCURRING PORPHYRINS. IV. THE URINARY PORPHYRIN IN LEAD POISONING AS CONTRASTED WITH THAT EXCRETED NORMALLY AND IN OTHER DISEASES 1

Abstract

Employing the method previously descr. by the writer, coproporphyrin I was isolated from normal urine, and from the urine in an instance of hemolytic jaundice, and one of pulmonary suppuration. Coproporphyrin III was obtained from the urines of 3 individuals with lead poisoning. Identification of the porphyrins was made by means of absorption spectrum, crystal form, and ester melting point.