Abstract
A study is made of toxic jaundice due to phenylhydrazine and toluylenediamine. The dried serum specimen of such experimental jaundice is histochemically tested on principle of Gmelin's or Hammarsten's reaction to a differentiation between direct-reacting bilirubin and indirect-reacting bilirubin. It is supported to conclude that the differences in reaction between these two types may lie in the differences in their entity, i. e., chemical constructure, rather than in the mere quantity of constituents in the serum or of bilirubin.
