308 Heinrich Rose. 
was over, he returned to the laboratory, and ever with a bright 
smile and kind greeting for the young men whom he found 
there at work. 
Beside the public instruction given by him as Professor, Rose 
was in the habit of receiving a few pupils into his private labo- 
ratory, and teaching them, partly himself, but chiefly through 
his assistant, the practical operations of analysis. ’ 
Without neglecting accuracy of execution, it was his principal 
care that analytical operations should be conducted upon cor- 
rect principles; and he always gave his personal attention to 
the selection of the most suitable course, and then followed the 
analysis in its progress with an interest which kept up that of 
his student. en a new subject was presented, the question 
was often asked, “ How will you do this?” The answer was 
listened to with patience and interest, and the sources of inac- 
curacy of the proposed method clearly and kindly pointed out, 
or a better one suggested. The number of his pupils was 
i we 
through his assistant, was not received without hesitation. one 
never made use of his students to perform the drudgery and 
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