Returning to Berlin, the usual round of duty was resumed; but there seems nothing worthy to be chronicled, save possibly the visit of the Shah of Persia and the Crown Prince of Siam. Both were seen in all their glory at the gala opera given in their honor; but the Persian ruler appeared to little advantage, for he was obliged to retire before the close of the representation. He was evidently prematurely old and worn out. The feature of this social function which especially dwells in my memory was a very interesting talk with the Emperor regarding the kindness shown his brother by the American people, at the close of which he presented me to his guest, the Crown Princess of Saxony. She was especially kindly and pleasing, discussing various topics with heartiness and simplicity; and it was a vast surprise to me when, a few months later, she became the heroine of perhaps the most astonishing escapade in the modern history of royalty. As to matters of business, there came one which especially rejoiced me. Mr. Carnegie having established the institution for research which bears his name at Washington, with an endowment of ten million dollars, and named me among the trustees, my old friend Dr. Gilman had later been chosen President of the new institution, and now arrived in Berlin to study the best that Germans were doing as regards research in science. Our excursions to various institutions interested me greatly; both the men we met and things we saw were full of instruction to us, and of all public duties I have had to discharge, I recall none with more profit and pleasure. One thing in this matter struck me as never before--the quiet wisdom and foresight with which the various German governments prepare to profit by the best which science can be made to yield them in every field.