The German bacteriologist Paul Ehrlich (1854-1915) advanced the science and practice of medicine by applying the fast-growing achievements of organic chemistry to the problems of disease. He is known for his discovery of Salvarsan.

Paul Ehrlich was born on March 14, 1854, at Strehlen, Upper Silesia. While still at school he took a great interest in chemical experiments and even got the local druggist to compound throat lozenges according to his original prescription.

Preparatory Work

At first Ehrlich attended Breslau University but found it dull and uninteresting because it lacked biology and organic chemistry, his favorite subjects. Accordingly, he passed on to the new University of Strasbourg, where he experimented with histological staining, but he returned to Breslau in his third term. In 1878 he graduated in medicine at Leipzig. His thesis was a contribution on the theory and practice of histological staining--the conception of the processes in their chemical, technological...