544 POPULAR SCIENCE MONTHLY. 



of Halle. Here he passed mucli of tlie time of his year's stay in the 

 pharmaceutical laboratory of Sternberg. 



One of the inheritances he received from his boyhood and which 

 he carried with him to the end was a great liking for an active out- 

 door life. In the summer vacations he would frequently take long 

 pedestrian tours, and in the course of one of these he met the cele- 

 brated Weber brothers, Ernst and Eduard, of Leipsic, with whom 

 there thus began a long friendship. Influenced by his new friends, 

 Hoppe, the next year, betook himself to Leipsic and entered the 

 classes of W. Weber in physics, E. H. Weber in physiology and 

 anatomy, and of Eduard Weber in nerve and muscular physiology. 

 He attended, also, Erdmann's lectures in organic chemistry and 

 Lehmann's in physiological chemistry and pharmacology. In the 

 spring of 1850 he went to Berlin, and the same year took his doc- 

 torate, with a thesis entitled On the Structure of Cartilage and on 

 Chondrin. This thesis and Hoppe-Seyler's subsequent work in the 

 same direction, which confirmed previously expressed views of Vir- 

 chow, attracted the favorable notice of the great pathologist, who 

 thereafter became to young Hoppe a helpful friend. 



He was approved as practicing physician in 1851, spent some 

 time in Prague in the study of obstetrics, returned to Berlin, and 

 entered practice. He found little liking for this, and in 1854 was 

 appointed prosector in anatomy in Greifswald, where he became 

 later Privatdocent. His personal relations here not proving to be 

 of the pleasantest, and the outlook for the future being anything but 

 promising, Hoppe resolved to go to America, and wrote Virchow to 

 that effect. The latter, however, induced him to remain, promised 

 him a position in his new laboratory, and soon had him appointed 

 assistant. Here his time at first was so taken up by students that he 

 was only able to carry on his chemical studies on Sundays. Again 

 Virchow came to the rescue, had a second assistant appointed, and 

 put Hoppe in charge of a laboratory of pathological chemistry. He 

 was appointed extraordinary professor in 1860, and his laboratory 

 quickly became the center of physiological chemistry in the world. 

 To it came Klihne, Alexander Schmidt, v. Recklinghausen, Leyden, 

 Wilson Fox, Botkin, and many others. 



In 1861 he was called to the chair of applied chemistry at 

 Tubingen, where he was shortly made full professor. His laboratory 

 here was of the most primitive description. It was located in the 

 former kitchen of the old castle on top of the hill. The big chimney 

 place, and the spits, were converted into appliances for chemical 

 research. Here began a most fruitful period of Hoppe-Seyler's 

 career; from this laboratory appeared much of his best work. Among 

 the students who gathered about Hoppe-Seyler here were Miescher, 



