are the moving molecules of Robert Brown?" These atoms of dead matter in rapid motion, when examined under the microscope, were then exciting great attention amongst philosophers.
I met at breakfast several of Humboldt's friends, with whose names and reputation I was well acquainted.
Humboldt himself expressed great pleasure that I should have visited Berlin to attend the great meeting of German philosophers, who in a few weeks were going to assemble in that capital. I assured him that I was quite unaware of the intended meeting, and had directed my steps to Berlin merely to enjoy the pleasure of his society. I soon perceived that this meeting of philosophers on a very large scale, supported by the King and by all the science of Germany, might itself have a powerful influence upon the future progress of human knowledge. Amongst my companions at the breakfast-table were Derichlet and Magnus. In the course of the morning Humboldt mentioned to me that his own duties required his attendance on the King every day at three o'clock, and having also in his hands the organization of the great meeting of philosophers, it would not be in his power to accompany me as much as he wished in seeing the various institutions in Berlin. He said that, under these circumstances, he had asked his two young friends, Derichlet and Magnus, to supply his place. During many weeks of my residence in Berlin, I felt the daily advantage of this thoughtful kindness of Humboldt. Accompanied by one or other, and frequently by both, of my young friends, I saw everything to the best advantage, and derived an amount of information and instruction which under less favourable circumstances it would have been impossible to have obtained.
The next morning, I again breakfasted with Humboldt.
