Heinrich Rose. 307 
numerous audience, and gave him the opportunity of imparting 
ideas to numbers of young chemists who came to him from 
all parts of the world. His lectures were marked by their sim- 
plicity and their soundness. In referring the phenomena of 
chemistry to the views which are alike their cause and explana- 
tion, he avoided all theories built up in advance of the facts, 
The facts were stated in his lectures, with their explanation 
in the plainest words, and the experiments designed to illustrate 
them were made in the simplest way, and, if possible, without 
Seemed to be his aim to avoid distracting the attention by the 
complexity or elegance of the apparatus, and to familiarize his 
als assistan cau : 
to be brightened, he found the Professor busily employed after 
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lecture in restoring to them their former dingy hue; re- 
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