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 sea, and, near Charenton, on the river Marne, not far from its junction with the Seine. At these experiments Count Potozki, and also the well known Bavarian engineers, Baader and Wiebeking, were present. Baader had seen the telegraph in Soemmerring’s house on the 26th of May.

On the 9th of June, Soemmerring delivered to Count Potozki, the telegraph intended to be shown at Vienna and at St. Petersburg.

On the 5th of July, Count Potozki communicated to Soemmerring from Baaden, near Vienna, that he, on the 1st of that month, had had the honour to exhibit his telegraph in action before his Majesty the Emperor Francis I., the Empress, and the Archdukes Charles and John, who had all been highly pleased. (“Ils en furent enchantés.”) The Emperor expressed his desire to have a telegraphic line established between the capital Vienna and his country palace Laxenburg (a distance of about nine miles).

On the 28th July, the aeronaut Robertson saw experiments with Soemmerring’s telegraph. At his request