PROFESSORS AT HEIDELBERG. 29 



without some personal sacrifice, for these 

 extra lectures were given at seven o'clock in 

 the morning, and the students were often 

 obliged to pull their professor out of hed for 

 the purpose. The fact that they did so shows 

 at least the friendly relation existing between 

 teacher and scholars. With Bischoff the bot- 

 anist also, the young friends were admitted to 

 the most kindly intercourse. Many a pleas- 

 ant botanical excursion they had with him, 

 and they owed to him a thorough and skill- 

 ful instruction in the use of the microscope, 

 handled by him like a master. Tiedemann's 

 lectures were very learned, and Agassiz always 

 spoke of his old teacher in comparative anat- 

 omy and physiology with affectionate respect 

 and admiration. He was not, however, an 

 inspiring teacher, and though an excellent 

 friend to the students, they had no such in- 

 timate personal relations with him as with 

 Leuckart and Bischoff. From Bronn, the pa- 

 leontologist, they received an immense amount 

 of special information, but his instruction was 

 minute in details rather than suggestive in 

 ideas ; and they were glad when their profes- 

 sor, finding that the course must be shortened 

 for want of time, displayed to them his mag- 

 nificent collection of fossils, and with the help 



