518 POPULAR SCIENCE MONTHLY 



the lymph hearts in amphibia; and also the results of his investiga- 

 tions on the coagulation of the blood. 



Just and prompt recognition did not fail to follow in the train 

 of these excellent results, and the consequent advancement and im- 

 provement in his material condition made possible for him other 

 interesting journeys. In 1828 he visited Goethe. The spring of 1831 

 he spent in the Leiden Museum in Holland. In the autumn of 1831 

 we find him in Paris in the company of several of the great natural 

 scientists, as Humboldt, Cuvier, Milne Edwards and others who were 

 there at the time. One significant anecdote of this Paris trip should 

 not be omitted. When for the first time Miiller went to call upon 

 Dumereil, the latter was very busy, and, since he did not know whom 

 he had to meet, somewhat peevishly directed Miiller to the door. 

 Miiller, however, as he was almost thrust out, pushed in his head and 

 called out to Dumereil, " Yes, but the Coecilien in the young stages do 

 have gill openings in their necks ! ' : This thrust, it is needless to say, 

 worked as a magic word to gain a long and pleasant interview between 

 these two investigators. 



In the year 1832 Eudolphi died at Berlin, thus leaving vacant the 

 foremost position in anatomy and physiology in Germany. Negotia- 

 tions were already in progress to secure as Kudolphi's successor Dr. 

 Tiedermann from Heidelberg; but at this point in the proceedings 

 Miiller determined upon a unique step. He sent to his old friend and 

 former benefactor, the Minister von Altenstein, copies of his works 

 together with a letter in which he (" believing that the importance of 

 the affair would furnish its own excuses ") brought himself prominently 

 into the proposition. He said, in part, that it was no more than 

 right that the first and highest position of the kind in Germany should 

 belong to the greatest among scholars; furthermore, that if this man 

 were not Johann Friedrick Meckel, then he believed himself to be the 

 foremost zoologist and physiologist in Germany. 



This letter had results : the Minister von Altenstein at once ordered 

 Miiller's nomination; and on Easter, 1833, Miiller, not yet thirty_- 

 three years old, entered upon his duties as " professor ordinary of 

 anatomy, physiology and pathological anatomy, and director of the 

 Anatomical Museums " in the University of Berlin. 



The first fruit of Miiller's residence in Berlin was the completion 

 of his " Handbook of Physiology," which he had begun long before he 

 left Bonn. Appearing in three parts, it was at last completed in 1840. 

 These volumes represented a piece of work unparalleled in the field of 

 physiological literature. The only work which could be compared 

 with it was Haller's " Elemental' Miiller's labors in preparation for 

 this work included an immeasurable number of single observations 

 with reference to the physiology of the voice, of speech, of hear- 

 ing, of nerve physiology, of teachings on the blood — all of these rest, 



